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Mac Owners: Use Your iPad as a Second Monitor for Your Computer

If your computer’s screen isn’t enough, use your iPad as a secondary display.

Even if you have a large Mac screen, it may not always be enough. Many people invest in a second monitor to get some breathing room when they’re gaming, streaming and multitasking. However, if you don’t want to spend money on another device that takes up space, you may not have to — with an iPad, you can get dual displays for free.

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As long as you have a Mac and iPad that are compatible, you can quickly and easily connect the two Apple devices and use the iPad as an extra display for your Mac computer. Using Sidecar, which comes built-in to supported devices, you can either extend your MacOS desktop or just mirror it onto your iPad, equipped with touchscreen controls to seamlessly use the two devices together. Here’s what you need to know.

In the market for an iPad? Here is a list of the best iPad choices for 2023 and the best deals on iPads.

Requirements to use your iPad as a second display

As mentioned above, both of your devices need to support Sidecar, which is the feature that allows you to use your iPad as a second monitor for your Mac. For your Mac, you must be running MacOS Catalina or later and it has to be one of the following models:

  • MacBook Pro (2016 or later)
  • MacBook (2016 or later)
  • MacBook Air (2018 or later)
  • iMac (2017 or later and Retina 5K, 27-inch, Late 2015)
  • iMac Pro
  • Mac Mini (2018 or later)
  • Mac Pro (2019 or later)
  • Mac Studio

And for your iPad, it must be running iPadOS 13 or later and be one of the following models:

  • iPad Pro
  • iPad (6th generation or later)
  • iPad Mini (5th generation or later)
  • iPad Air (3rd generation or later)

It’s best to update your devices to the latest software available to avoid any issues. Also, both devices must be logged in to the same Apple ID account, using two-factor authentication. 

If you plan on going wireless, the two devices must be within 30 feet of one another. You can also use your USB to connect the two devices, with the advantage of being able to also charge your iPad while it’s in use as a second monitor.

Share your entire Mac desktop to your iPad

Depending on what software update you have on your computer, sharing your computer desktop to your tablet may vary. If you’re running MacOS Big Sur or later, click the Display icon in the menu bar at the top right. In the menu that appears, choose your iPad.

If you’re on MacOS Catalina, you’ll instead click on the AirPlay icon in the menu bar and then select your iPad. If for some reason you don’t see the AirPlay icon, click the Apple menu in the top right and go to System Preferences > Displays and check Show mirroring options in the menu bar when available.

Display menu on MacDisplay menu on Mac

Click the Display option in the menu bar to find your iPad.

Screenshot by Nelson Aguilar/CNET

Once your Mac and iPad are connected, you have several options to choose from that appear in the Display/AirPlay menu:

  • Mirror Built-in Retina Display: Mirror your exact desktop to your iPad. This will shift your computer desktop to look more like your iPad.
  • Use As Separate Display: Use the iPad as an extension to your desktop. To use your iPad display, drag any window or files from your Mac computer to the right of your screen, which will take you to the tablet. To go back to your computer, simply drag your cursor back to where you came from.

Share only one Mac window to your iPad

Alternatively, you can quickly share a window instead of dragging it over to your iPad. For example, you could share your web browser in Safari or what you’ve jotted down in your Notes. To do this, simply hover your mouse cursor over the green full-screen button that appears on the top left of most windows. After a second of hovering, you should see an option that says “Move to iPad,” which will share that window to your tablet. You can share multiple windows, in succession, to your iPad.

Share window via SafariShare window via Safari

Hover over the full-screen button to send that window to your iPad.

Screenshot by Nelson Aguilar/CNET

Using the sidebar controls, gestures and Touch Bar on your iPad

Once your screen is shared over to your iPad, a set of controls will appear on the left side of your iPad, which are sidebar controls you’ll commonly see on your Mac. That includes, from top to bottom:

  • Menu bar: Show or hide menu bar when in full-screen
  • Dock: Show or hide dock
  • Command: Double-tap to lock key
  • Option: Double-tap to lock key
  • Control: Double-tap to lock key
  • Shift: Double-tap to lock key
  • Undo: Undo last action
  • Keyboard: Show or hide keyboard
  • Disconnect: Disconnect iPad from Mac

In addition to these Mac controls, you can also use a number of swipe gestures to control certain things on the second monitor (you won’t be able to use the touchscreen as usual though). That includes swiping with two fingers to scroll, pinching in with three fingers to copy, swiping left with three fingers to undo and more.

And finally, you may also be able to use the Touch Bar, if the application on your iPad is compatible. For instance, if you move Safari over to the iPad, you’ll see Touch Bar controls to go back and forward, use the search bar, flip between tabs and open a new tab. In Messages, you would see controls to create a new text, send an emoji and predictive text. The Touch Bar may not appear for every app you use on your iPad.

iPad monitoriPad monitor

This is what your iPad will look like as a second monitor.

Screenshot by Nelson Aguilar/CNET

If you don’t want to use the Sidebar or Touch Bar controls, you can also get rid of them. On your Mac, click on the Display icon in the menu bar, and underneath your connected iPad, you should see Hide SideBar and Hide Touch Bar. Click on either or both options to hide the controls from your iPad.

Using your iPad while connected to your Mac

Even if you’re using your iPad as a second monitor, you can still swipe up to exit the Sidecar application and use your iPad as usual. In your dock, you’ll see a blue icon with two monitors on it — this is Sidecar. To go back to using your iPad as a second monitor, tap on the Sidecar app icon in the dock.

iPad user interfaceiPad user interface

You can use your iPad as usual, even when connected to a Mac via Sidecar.

Screenshot by Nelson Aguilar/CNET

If you’re interested in learning more about what your iPad is capable of, check out how to declutter your iPad dock by removing this annoying feature and nine things to do immediately after you get a new iPad.

Technologies

NBA commissioner Adam Silver says league could introduce ‘smart ball’ technology as soon as next year

Commissioner Adam Silver says the NBA could begin using a new “smart ball” in games as soon as next year, potentially transforming how officials make calls.

NBA Commissioner Adam Silver says the league could begin using a new “smart ball” in games as soon as 2027, potentially transforming how officials make calls on the basketball court.

In an interview with CNBC’s Contessa Brewer, Silver revealed that the NBA is working with official basketball manufacturer Wilson to develop a ball embedded with a tiny microchip Bluetooth sensor that can track movement, spin and changes in trajectory.

“We’re experimenting with putting a small chip in the ball that weighs roughly a gram,” Silver said.

The technology has already been tested in the NBA’s G League, Summer League, and some preseason games, where players used basketballs both with and without the chip. Silver said players have been pleased with the results.

“Nobody could tell the difference. So that’s a good sign,” he said.

The chip weighs just one gram, compared with the roughly 620-gram or 1.4 pound basketball. Silver said the league wanted to ensure that even the most experienced players wouldn’t notice a change in how the ball feels or bounces.

One of the most immediate applications could be officiating.

Silver said the technology could help referees determine whether a player touched the ball before it went out of bounds by detecting subtle changes in its spin. It could also help identify whether a shot’s trajectory was altered.

“I think you could see as soon as next year us using it for officiating in our games,” Silver said.

Beyond officiating, Silver sees a significant opportunity to bring the technology to consumers, allowing basketball players of all ages to analyze and evaluate their shooting mechanics.

For example, a player taking hundreds of shots could use data collected by the chip to understand which shooting angles and ball rotations are most likely to result in a basket.

“You’ll then see the graph, and you’ll see for which the angle of the shots that went in, they’re more likely to go in,” Silver said.

While the officiating application could arrive as soon as next year, Silver said a consumer version may take longer.

“I think the consumers version [of the smart ball] is a few years away, but it’s a really exciting opportunity.”

NBA players’ union raises concerns over wearables

The league is also exploring the use of wearable technology during games, but negotiations with the National Basketball Players Association have yet to produce an agreement.

The NBA says officials experimented with wrist wearables in select preseason and summer league games this year in a “successful pilot program,” but it will not extend into the season. The technology allowed the referees to communicate with the replay center about reviews, scoring changes and clock malfunctions.

Silver said players routinely use wearable devices off the court to monitor everything from sleep to physical performance, but concerns remain over how data collected during games could be used by teams.

“I think we have to come to some agreement on exactly how the information is used. But it seems everybody wants that information,” Silver said.

The biggest sticking point is whether that information could affect contract negotiations, Silver said.

“If you could see a player was slowing down or something like that, they’re worried that that could get used in bargaining, and I get that,” he said.

Silver acknowledged those concerns and said the league needs to reach an agreement with the players’ union on how the information would be used.

Still, he suggested that allowing wearables during games is a logical next step as athletes increasingly rely on technology to monitor their performance.

“I think the players are in a position right now where they’re essentially wearing wearables 22 hours a day, and the only time they’re not wearing them is when they’re playing in the game,” Silver said. “So that can’t make sense.”

“We’ll work something out with them,” he added.

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AI’s quiet safety gatekeepers are stepping into the spotlight

The intensifying AI safety debate is bringing a small group of third-party evaluators into the center of a multitrillion-dollar industry.

Two months ago, independent evaluators occupied a relatively sleepy corner of the multitrillion-dollar artificial intelligence industry. Now they’re being asked to come to its rescue.

While Anthropic and OpenAI are the heart of a fierce debate over whether they can safeguard their advanced models and grow their businesses simultaneously, the companies are seeking support from a handful of small third-party groups like Model Evaluation and Threat Research (METR), Apollo Research and Transluce.

The evaluators, which mostly operate as nonprofits, are still finding their footing in an industry where capital is flowing at historic levels and new models are rolling out faster than ever. Their primary role has been to assess AI model capabilities and risks, and to call attention to instances where the technology behaves badly.

In the absence of a federal push for regulations, evaluators have taken on outsized importance. Anthropic CEO Dario Amodei pledged to embed independent evaluators in his company last month – a move that OpenAI CEO Sam Altman quickly endorsed.

President Donald Trump supported the idea, as did most of the largest U.S. tech companies. But left unanswered are questions about how those third parties should be funded, what level of access they will have and what the reporting structure will ultimately look like.

“To a degree, the problem, as always, is money,” Suresh Venkatasubramanian, a computer science professor at Brown University, told CNBC in an interview. “Who is paying for these companies to do their work? How are they going to support them? You need an ecosystem, you need a viable business model for this.”

Right now, Anthropic, OpenAI and the infrastructure partners that are profiting from the AI boom are writing the rules. Critics say that’s like asking the biggest banks to protect us from a financial crisis or allowing pharmaceutical companies to put drugs on the market without regulatory clearance.

President Trump recently lauded AI executives for their “tremendous self-policing,” and signaled that he intends to leave companies to their own devices, unwilling to impede the growth of the industry that’s driving the economy and stock market. Trump encouraged AI companies to “partner with an independent external auditor or evaluator” as part of a voluntary accord he presented in late September.

It’s a conversation that Amodei kicked off In his viral essay last month, when he called for a “slower pace” in advanced model development after researchers left his company and voiced their concerns about the existential threats the technology poses.

As the AI labs move to put evaluators in place, friction is already starting to emerge.

OpenAI fired three employees last week for “violating our policies on accessing and handling sensitive company information,” according to a spokesperson. Two of those employees, Mikita Balesni and Tomek Korbak, said they believe they were dismissed because of how they communicated with third-party evaluators.

“My former colleagues are telling me they are confused about what to believe,” Balesni wrote in a post on X on Thursday. “They also are afraid to speak, and worry their personal phones will be searched for messages to us and third parties. I worry the pervading fear to speak up and engage with third parties will mean OpenAI will cut corners on safety behind closed doors.”

OpenAI disputed that characterization and said in a post on Friday that it’s “actively finalizing contracts with third-party safety assessors and will announce details in the coming weeks.”

“We are committed to embedding external assessors and continue to make close collaboration with independent safety organizations a core part of our safety work,” OpenAI wrote.

An OpenAI spokesperson said in an emailed statement that its upcoming work with evaluators “builds on existing collaboration with independent safety organizations,” including METR and Redwood Research.

Anthropic didn’t respond to CNBC’s request for comment.

‘I’ve never seen an issue move so fast’

The AI evaluator ecosystem consists mostly of small organizations, including METR and Apollo Research, and larger accounting and auditing firms like Accenture.

AI labs have been working with evaluators in limited capacities, but Andrew Freedman, CEO of policy nonprofit Fathom, said the field is quickly maturing.

“I’ve worked in politics and policy for the last 20 years of my life, and I’ve never seen an issue move so fast on so many different political spectrums,” Freedman told CNBC in an interview. He said he expects an “influx of capital” to flow into the ecosystem.

Rayan Krishnan, CEO of independent evaluator Vals AI, said his for-profit startup, which builds benchmarks to measure how AI models perform on industry-specific tasks, has grown from eight employees to roughly 30 this year, and in August announced a $40 million funding round.

METR, a nonprofit, announced in August that it had raised commitments of around $71 million over the last six months. That’s up from total 2024 contributions of $13.6 million, according to the group’s most recent filing with the Internal Revenue Service.

By late that month, METR’s profile had risen further. OpenAI enlisted two of its employees and a contractor to put together a postmortem report detailing how the company’s models escaped containment, accessed the open internet and breached open-source developer platform Hugging Face. METR said it did not accept payment from OpenAI for the assessment.

Kevin Werbach, faculty director of the Wharton Accountable AI Lab at the University of Pennsylvania, said the ecosystem is “not robust enough right now.” METR, for example, employs fewer than 50 full-time staffers, according to its website.

The power imbalance between the small evaluators and the leading labs that have raised tens of billions of dollars and employ thousands of people raises questions surrounding potential conflicts.

“If you want true third-party evaluation, you need true independence financially and otherwise,” said Venkatasubramanian. “It’s not just a matter of not getting paid, it’s a matter of, will there be consequences if I am an auditor and I put out a report that looks unfavorable to this company? Is my business going to dry up?”

Anthropic acknowledged the complexity in a blog post last month, as it announced it will embed employees from Faculty, Accenture’s specialist AI business, to test safeguards and assess whether models will behave in line with human values. Anthropic said that “given the importance and urgency of this work,” it will fund Accenture’s contributions directly.

“There are, as yet, no standards for what information embedded evaluators should have access to, or how they should report what they find. There is also no settled system for funding independent evaluation,” Anthropic said. “Long-term, we think funding should come from pooled or government sources.”

Anthropic said it’s in discussions with METR and other nonprofit evaluators that are planning to use their own funding to pilot “elements” of embedded evaluation.

Will the government step in?

In June of last year, Fathom introduced a marketplace framework for Independent Verification Organizations, or IVOs. These groups would be licensed by the government and authorized to test whether AI companies are meeting various safety criteria.

Freedman, the group’s CEO, said government oversight is key because otherwise third-party evaluators can become beholden to the large AI labs for revenue, incentivizing them to “start rubber stamping stuff” to maintain favor.

Some lawmakers are on board.

IVOs are a key provision of the ″Frontier Risk Oversight, National Transparency, Independent Evaluation, and Reporting” (FRONTIER) Act, which Reps. Lori Trahan, D-Mass., and Jay Obernolte, R-Calif., introduced in July. Fathom helped draft language and provided technical expertise for the bill, Freedman said.

OpenAI global affairs chief Chris Lehane told reporters in September that he sat down with one of the bill’s sponsors on Capitol Hill to express support for the IVO provision.

“It was important for them to hear that and hear it from us, and we wanted to be really clear about that,” Lehane said, according to reports.

Meanwhile, lawmakers in California, Connecticut and Virginia have taken steps to implement IVOs, and states like Massachusetts are weighing independent safety evaluations more broadly.

California Governor Gavin Newsom recently signed two bills involving IVOs, one establishing a “first-in-the-nation framework,” and the other creating a state registry for AI auditors. Anthropic threw its support behind both bills in August, and OpenAI formally endorsed them last month, the same day Newsom signed them into law.

Lehane wrote in a blog post at the time that “we prefer independent technical assessments to be required at the federal level,” but in the absence of federal action, “California can help establish the rules of the road.”

Freedman said he thinks it will be “really difficult” for companies like OpenAI and Anthropic to work out how to engage with independent evaluators on their own. However, with the government’s role unclear, “it’s a muscle worth developing in the interim,” he said.

For now, the closest thing the industry has to a set of standards is what Trump called a “morally binding” agreement at a luncheon he hosted for tech leaders at the White House late last month.

The one-page accord says that “every company is responsible for developing its own technology safely and in a way that builds trust with customers and the public.” It also encourages signees to work with an “independent external auditor or evaluator to carry out independent assessments.”

The document was signed by top execs at Anthropic, Google, Meta, OpenAI, SpaceX and Nvidia, a rare show of solidarity between leaders who have shared conflicting views on addressing AI’s risks. The executives still have to chart their own paths forward.

“It was a performance of an attempt to show action when in fact no action actually happened,” Venkatasubramanian said. “The things that they promise to do are things they should have been doing already, and, in fact, have claimed that they were doing in the past.”

Amodei, in his September essay, said Anthropic will equip evaluators with desks, access badges, company laptops, and permissions that are “mostly comparable” with internal risk assessment teams. Additionally, evaluators will be supported with contracts that give them “the right to publish key findings,” with Anthropic reserving “the narrow ability” to redact certain security-sensitive or confidential information.

“This is an unusual step for a company, but we think it is important to prove out the concept of embedded external reviewers,” Amodei wrote.

OpenAI published its own proposal days later, and said evaluators should work on “scoped and mutually agreed upon claims for assessment,” clearly explain their methodology and standards, demonstrate relevant technical expertise and disclose conflicts of interest.

The AI Evaluator Forum, which includes METR, the AI Verification and Evaluation Research Institute (AVERI), and other groups, published a public letter last month titled, “Minimum Conditions for Embedding Evaluators.”

The letter said evaluators should be transparent, shielded from retaliation and granted access equivalent to AI companies’ “own highly privileged employees.”

“Embedded evaluations cannot address all oversight needs and should be treated as a complement to, rather than a replacement for, broader efforts by frontier AI companies to expand external oversight,” the letter said.

Freedman said he’s seen a shift in posturing out of OpenAI and Anthropic in recent months, largely because they’ve realized they won’t be able to roll out their advanced systems without the public’s trust.

“I don’t think you need to trust that they’ve suddenly turned altruistic or that there’s anything but corporations acting like corporations,” Freedman said.

That underscores perhaps the central problem, Werbach said. OpenAI and Anthropic are, first and foremost, competing with each other as they march toward the public markets and seek trillion-dollar-plus valuations.

“There is a tremendous amount of personal distrust between those two companies,” Werbach said. “Even though there’s also tremendous agreement about the need for this kind of evaluation to happen.”

WATCH: Bradley Tusk on Anthropic IPO: Why add public market pressure if safety is your top priority?

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Trump says he is ‘going to look at’ joining Saudi Arabia in the fight against Iran-backed Houthis after deadly airport strike

U.S. military involvement in the fight against the Houthis would stretch resources in the Middle East already committed to fighting Iran, analysts said.

President Donald Trump said he is considering joining Saudi Arabia in its retaliation against Tehran-backed Houthis in Yemen after a deadly attack on Riyadh’s main airport, a move that could draw the U.S. further into a second front in the Iran war.

“We may. We’re going to look at it,” Trump told reporters outside the White House on Saturday when asked if the U.S. would back Saudi Arabian strikes. “We just found out about the recent attack. So, we’ll make a decision. We move very quickly.”

Two Saudi Arabian government officials told MS NOW that the kingdom is requesting “urgent defense support” from the U.S. following the attacks.

The officials, including a senior member of the Ministry of Foreign Affairs, did not want to be identified because of the matter’s sensitivity. They added that the U.S. needs to intervene “as soon as possible” to help the Saudi-led coalition in Yemen fight the Houthis.

The White House did not immediately respond to a CNBC request for comment.

The Saudi General Authority of Civil Aviation said the attack on King Khalid International Airport in Riyadh killed 12 people and injured 309 others, the country’s official Saudi Gazette media outlet reported.

Colonel Turki Al-Maliki, the spokesman for the Saudi-led Coalition to Support Legitimacy in Yemen, which has been leading the fight against the Houthis, described the attack as a “war crime.”

“Therefore, the Joint Forces Command of the Coalition will respond decisively to this terrorist attack in accordance with the Customary International Humanitarian Law,” Al-Maliki said in a post on X.

It was the second deadly assault on Riyadh’s airport in less than a week.

Three Saudi nationals, including a pilot, were killed in attacks on the facility by Iran-backed Houthi militants on Thursday.

Following Saturday’s attack, the Houthis renewed their warning against using Saudi airports.

“We renew our warning to all airlines, experts, employees, workers and travellers against using Saudi airports and airspace, as they are vulnerable to attack and have become a theatre of operations for our forces, with the exception of the airports in (the holy cities of) Mecca and Medina,” the Houthis said in a post on X.

Saudi Arabia, a key U.S. ally in the Middle East, intervened in Yemen’s civil war between the Houthis and its internationally recognized government after the group seized the Yemeni capital Sanaa in 2014.

Last month, the Trump administration approved the potential $24.3 billion sale of nearly 50 F-35 warplanes to Saudi Arabia in what was seen as a major boost for the kingdom as it faces intensifying attacks from the Houthis. The sale is under congressional review.

International energy conference still on

The Saudi energy ministry said a long-planned international energy conference will still take place in Riyadh on Sunday, Reuters reported.

The five-day WPC Energy Congress is taking place at a convention center near King Khalid airport. State television told Reuters that more than 70 ministers, 300 company executives and representatives of more than 25 international energy organizations have confirmed their attendance, though it was not clear whether the participants would attend in person or virtually.

Reuters said a ministerial meeting of the International Energy Forum is also set to take place, with its plenary session to be held behind closed doors.

Energy choke points

In addition to attacks on civil aviation, the Houthis have also been trying to choke off oil tanker traffic through the Bab el Mandeb strait, a key entry point to the Red Sea, as Iran has effectively done in the Strait of Hormuz to the north of the Arabian Peninsula.

Earlier this month, Yemeni government forces said they reclaimed the strategic port city of Mokha from the Houthis.

Energy prices have soared since the start of the Iran war, which began with U.S. and Israeli airstrikes on Iranian targets on Feb. 28, putting pressure on consumers globally.

The surge in domestic fuel prices has been a key issue for voters ahead of next month’s U.S. midterm elections.

But that support would be expensive militarily.

“Potential U.S. involvement in the Saudi-Yemeni government air campaign to degrade Houthi ballistic missile capabilities would mark the first direct U.S. military action against the group since the conclusion of Operation Rough Rider in May 2025,” according to the Critical Threats Project, part of the American Enterprise Institute think tank.

The offensive aimed to suppress the Houthis’ capabilities, but recent attacks show the group has regrouped.

“After seven months of war, there are questions about the U.S. capacity to wage a sustained campaign against the Houthis, return to combat against Iran if necessary, and prepare for contingencies in other parts of the world, notably East Asia,” Steven Cook, an expert on Arab and Turkish politics at the Council on Foreign Relations think tank, wrote last month.

Meanwhile, the United Kingdom’s defense secretary said his government is also examining how to support Saudi Arabia.

“I’ve spoken to my Saudi counterpart [Khalid bin Salman] on a number of occasions in recent weeks to look at what more we can do to support Saudi Arabia, and I’m afraid last night explains precisely why we are providing that support,” Wes Streeting said in an interview on BBC television on Sunday.

Streeting said the U.K. is not getting involved in offensive operations “at this stage.”

“We’ve always been clear that there isn’t a military solution to this conflict,” Streeting added.

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