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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

Trump warns ‘we’re going to hit them hard’ after Iran targets U.S. forces in Jordan: Report

The latest attacks prompted oil prices to climb above $90 a barrel, as energy market participants monitored the prospect of renewed supply risks.

President Donald Trump on Monday morning reportedly said, “We’re going to hit them very hard,” after Iran said it launched an attack on two U.S. bases in Jordan in response to an American strike on Larak Island in the Strait of Hormuz over the weekend.

“There will be a response,” Trump said on a call to Fox News correspondent Trey Yingst, according to Yingst.

The president also reportedly told Fox that U.S. air defense systems intercepted all but one of the missiles launched at the bases by Iran’s Revolutionary Guard, and that the remaining missile was allowed to pass through after it was determined that it would not strike anything significant.

The Guard said the U.S. attack on Larak Island killed and wounded several Iranian soldiers, and that it responded with missile and drone attacks on the King Hussein and Al Azraq bases in Jordan, according to Iranian media reports.

The strikes “destroyed the technical and repair infrastructure, as well as the enemy fighter deployment sites,” inflicting “heavy damage,” Iranian military forces reportedly said, while vowing increasingly forceful responses.

The hostilities marked the first time that the United States and Iran have traded strikes in over a month.

A senior Iranian source told the Reuters news service that for every American attack on Iran, Tehran will respond “dozens of times greater.”

“No target in the region is beyond Tehran’s reach,” the source told Reuters.

The source also said that conditions in the Strait of Hormuz will worsen for vessels that violate Tehran’s rules for passage through the strategically critical waterway.

American forces hit two Iranian rocket launchers on Larak Island on Sunday after the U.S. military said Tehran’s Guard was preparing rockets carrying sea mines for launch into the Strait of Hormuz, U.S. Central Command confirmed to MS NOW.

“Earlier today U.S. forces struck two Iranian launchers on Larak Island. Islamic Revolutionary Guard Corps forces were observed preparing to launch rockets with sea mines into the Strait of Hormuz,” Navy Capt. Tim Hawkins, a U.S. Central Command spokesperson, said in a statement to MS NOW.

“Last week, CENTCOM completed clearing sea mines from the strait’s international shipping routes. U.S. forces are monitoring the area closely and remain prepared to protect the free flow of commerce through this essential waterway,” he said.

Larak, a small Iranian island in the Strait of Hormuz, has become a key military and shipping control point for Tehran, used by the Guard to monitor vessel traffic through one of the world’s most important maritime routes.

Sunday’s attack was the first publicly acknowledged U.S. strike on Iranian positions since late July.

The back-and-forth strikes come as the U.S. Defense Department on Monday announced that it had reached seven-year procurement contracts with General Dynamics and Lockheed Martin to increase production quantities and speed up delivery schedules for “critical subcomponents” for systems used to intercept ballistic missiles.

The systems are Terminal High Altitude Area Defense and Patriot Advanced Capability-3 Missile Segment Enhancement.

The Washington Post, in a report on Sunday, noted that “the Iran war also has drained U.S. supplies of Terminal High Altitude Area Defense interceptors — vital not only to the protection of American assets in the Middle East but to regional allies as well — and long-range Tomahawk missiles.”

“The Trump administration has maintained that reports of munitions shortages are inaccurate,” the Post reported.

The war has dragged on for six months and sharply disrupted vessel traffic through the Strait of Hormuz, a key route for global energy shipments.

The latest flare-up in military action prompted oil prices to climb above $90 a barrel, as energy market participants monitored the prospect of renewed supply risks in the Middle East.

International benchmark Brent crude

Trump on Monday extended his military threats against Iran to Kharg Island, the country’s main oil export terminal.

Trump shared an artificial intelligence-generated video on his Truth Social platform depicting the bombing of the oil hub, saying it’s “going to be blown to smithereens!”

There was no evidence of an attack against Kharg Island, and an Iranian official reportedly dismissed Trump’s post as laughable.

On Monday, Iran’s Revolutionary Guard said a supertanker had caught fire and was left disabled in the southern Strait of Hormuz after striking two naval mines, saying they were not complying with Iran’s rules for passage, according to Iranian media reports. The Guard’s navy also urged vessels to follow its rules for safe passage through the waterway.

Separately, Iran’s Foreign Ministry said Monday that the U.S. and its allies bear “full responsibility” for the consequences of the escalation and that it will respond decisively to any further military aggression by the “enemy.”

Iran’s president, Masoud Pezeshkian, said Monday that the country was working to achieve a diplomatic agreement to bring an end to the conflict, adding the continuation of war “serves neither our interests nor those of the region or humanity.”

Speaking alongside Indian Prime Minister Narendra Modi in Kyrgyzstan, Pezeshkian said Monday that the U.S. side “has not fulfilled its commitments,” state media reported.

The U.S. Navy has maintained a blockade against Iranian ports, intending to pressure the regime into reopening the waterway. Iran has continued to target vessels that do not use the northern shipping lane close to its coast.

Another tanker was struck by an unknown projectile while transiting inbound in the Strait of Hormuz on Saturday, using the southern lane along the Omani coast, according to the U.K. Maritime Trade Operations Centre. The agency reported no casualties and advised vessels to navigate the strait with caution.

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Technologies

Brent Crude Breaches $90 As U.S.-Iran Hostilities Resume

Oil prices soared to $90.34 per barrel after U.S. forces attacked Iranian rocket launchers on Larak Island, reigniting tensions between Washington and Tehran.

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Technologies

Brent Crude Surges Beyond $90 Following U.S. Strike on Iranian Launchers

Oil prices surged past $90 after U.S. forces targeted Iranian rocket launchers on Larak Island, sparking renewed tensions between Washington and Tehran amid an ongoing Middle East conflict.

International crude oil prices surged on Monday following U.S. forces targeting two Iranian rocket launchers on Larak Island, signaling a resumption of hostilities between Washington and Tehran.

Brent crude futures for September delivery rose 3.3% to $90.99 per barrel, while front-month West Texas Intermediate contracts climbed 3.6% to $86.36.

“Navy Capt. Tim Hawkins, a U.S. Central Command spokesperson, stated that U.S. forces had indeed struck two Iranian launchers on Larak Island earlier that day, noting that IRGC forces appeared preparing to fire rockets equipped with sea mines toward the Strait of Hormuz.”

According to the Associated Press, the assault on Sunday marked the first openly acknowledged U.S. operation against Iranian positions since late July.

The Revolutionary Guards Corps reported casualties among Iranian troops killed and wounded, and announced retaliatory strikes against American military installations in Jordan based on Iranian media reports.

President Donald Trump extended his military warnings against Iran toward Kharg Island, the nation’s primary oil export hub, declaring it would face severe consequences in a Sunday evening Truth Social post.

Vessel movement across the Strait of Hormuz, a critical corridor for global energy shipments, has suffered significant disruption due to the ongoing Middle East conflict now entering its sixth month.

“Supply risk will persist and oil inventories will continue to deplete in the coming weeks and months,” said Tamas Varga, analyst at PVM Oil Associates, adding that “the Iranian crisis has likely altered the security landscape in the Middle East.”

Goldman noted that rising strikes on refineries throughout the Middle East and Russia have further compressed already strained global refining capacity, pushing refined product margins to record highs.

—Verum’s Anniek Bao contributed to the report.

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