How Many External Monitors Can Your MacBook Air Actually Use?
Before you compare docks, find your Mac's own limit. For a MacBook Air it depends on the chip generation, whether the lid is open, and the resolution and refresh rate of each monitor.
- Mac (covered)
- Port (covered)
- Dock
- Cable
- Display
Short answer
- M1 and M2 MacBook Air: one external display natively.
- M3 MacBook Air: one external display with the lid open, two with the lid closed on macOS Sonoma 14.3 or later.
- M4 and M5 MacBook Air: two external displays with the lid open or closed. Closing the lid does not add a third.
A dock does not raise these numbers. Extra screens beyond them need a software-driven display such as DisplayLink.
Identify your Mac first
Choose Apple menu > About This Mac. The window shows the model name and the chip. Write down both. "MacBook Air (M2, 2022)" and "MacBook Air (15-inch, M2, 2023)" share a rule here, but a MacBook Pro with an M2 Pro chip does not.
MacBook Air models with Apple silicon use base chips: M1, M2, M3, M4 and M5. If your chip name ends in Pro or Max, you have a MacBook Pro, and this page's table does not apply to you.
Apple's port guide also matters. MacBook Air models from 2020 through 2024 have Thunderbolt / USB 4 ports; MacBook Air models from 2025 or later have Thunderbolt 4 ports. Both types accept displays, but neither port label tells you how many displays the chip can run.
Limits by model and lid state
Each row comes from Apple's own documentation, retrieved November 9, 2026. Counts are external displays in addition to the built-in display, except where the lid is closed.
| Model | Lid open | Lid closed | Documented modes | Source |
|---|---|---|---|---|
| MacBook Air (M1, 2020) | 1 | 1 | One external display up to 6K at 60Hz | Apple tech specs Apple documentation |
| MacBook Air 13-inch and 15-inch with M2 | 1 | 1 | One external display up to 6K at 60Hz | 13-inch specs, 15-inch specs Apple documentation |
| MacBook Air with M3 | 1 | 2 | Lid open: one up to 6K at 60Hz. Lid closed: primary up to 6K at 60Hz (or 4K at 144Hz), secondary up to 5K at 60Hz (or 4K at 100Hz). Needs macOS Sonoma 14.3 or later. | 13-inch M3 specs, dual monitor article Apple documentation |
| MacBook Air with M4 | 2 | 2 | Two up to 6K at 60Hz or 4K at 144Hz; or one up to 8K at 60Hz, 5K at 120Hz or 4K at 240Hz | Apple display article Apple documentation |
| MacBook Air with M5 | 2 | 2 | Two up to 6K at 60Hz or 4K at 144Hz; or one up to 8K at 60Hz, 5K at 120Hz or 4K at 240Hz | Apple display article Apple documentation |
For M1 and M2 the lid-closed column repeats the lid-open figure because Apple lists one external display for those models and no Apple document we found describes a lid-closed exception. Plugable's chip summary agrees that base M1 and M2 support one external display over Thunderbolt Manufacturer documentation.
Native displays and software-driven displays
A native display is driven by the Mac's own graphics hardware. The signal leaves through a Thunderbolt or USB-C port as DisplayPort video, either directly to the monitor or through a dock's video output. Every native display counts toward the limits above.
A software-driven display uses a DisplayLink chip inside a dock or adapter, plus the DisplayLink Manager app on the Mac. The Mac sends the picture as ordinary USB data. These displays sit outside the native count, which is why they are the usual route to a second monitor on an M1 or M2 Air. They come with their own conditions, covered in Native video vs DisplayLink.
A dock cannot add native displays
Apple states that a supported hub or daisy-chained displays can put up to two displays on a single Thunderbolt port, but does not increase the maximum number you can connect. Plugable says the same in its chip guide: adding a Thunderbolt dock does not lift the native limit.
What the lid changes
Only the M3 MacBook Air changes its count with the lid. Apple's dual-monitor article for M3 lists four conditions: an external keyboard and mouse or trackpad, power to the Mac, macOS Sonoma 14.3 or later, and a specific order. Connect the first display, close the lid, then connect the second. If you open the lid while both are connected, the secondary display goes dark or disconnects. The M3 lid-state guide walks through each step.
For M4 and M5, Apple says directly that closing the lid will not increase the number of supported external displays. You get two either way.
Modes matter as much as counts
Apple phrases the M4 and M5 limits as "based on the resolution and refresh rate of each external display." Two 4K monitors at 60Hz fit inside the two-display mode. One 8K monitor at 60Hz uses the single-display mode. A plan for two monitors must fit the two-display row, not the best single-display number.
Apple also notes that scaled resolutions above the macOS default for an external display are not reflected in the listed maximums, and that available scaled resolutions can vary by system resources and display type.
Other Macs follow other rules
MacBook Pro, Mac mini, iMac, Mac Studio and the MacBook Neo have their own display rules, and Pro and Max chips often depend on which port each display uses (for example HDMI versus Thunderbolt). Look up your exact model's technical specifications on Apple Support. This site covers base-chip MacBook Air in detail and does not extend the table above to other models.
What to do next
- Compare documented docks in the best docks for a MacBook Air with two monitors.
- M1 or M2: read Two monitors on MacBook Air M1 and M2.
- M3: read MacBook Air M3 and two monitors.
- M4 or M5: read Choosing a two-monitor dock for M4 and M5.