How we check
Mac display limits start with Apple’s spec pages. We distinguish published combinations, estimated signal modes, and the hardware details that still need checking.
One Apple page per row
Each Mac on this site is one row: one model with one chip. Each row comes from Apple's tech specs page for that model on support.apple.com, and links to it, so you can read the source yourself.
Apple's words, copied exactly
We copy the part of that page about displays word for word and show it with the answer. The limits we use come from that text.
A checked date
Each row shows the day we last compared it with Apple's page.
What Apple does not say
Where Apple gives only a port's top mode, such as 6K at 60 Hz, the faster rates we show for lower resolutions, like 4K, 1440p and 1080p, are our estimate. Apple does not state them. For a Thunderbolt or USB-C port, we work them out from what its DisplayPort link can carry. For an HDMI port, they are a first guess that we keep below what its top mode allows.
The diagram is a connection plan
The native display count is a chip limit, not a count of physical sockets. Our generic Thunderbolt dock schematic routes up to two available native streams; HDMI and additional streams stay direct. A particular dock can impose lower limits. We do not calculate its shared bandwidth, compression, colour depth or exact output combinations.
Apple explains supported Thunderbolt hubs and display combinations. Thunderbolt can carry separate displays over one port; ordinary DisplayPort MST hubs are different.
DisplayLink is a separate tradeoff
We model two additional outputs, each up to 4K at 60 Hz. This requires a suitable DisplayLink device and software. DisplayLink Manager needs Screen Recording permission, and protected video can be affected on all displays while it is connected.
Shopping candidates, with conditions
Product suggestions follow the routes in a working plan and link to manufacturer specifications. We do not know your exact monitor input, firmware or cable length, and have not physically tested the complete bundle. Review the conditions alongside each suggestion. Prices and availability are shown by the seller.
A script that checks again
A script fetches every Apple page again and checks that the copied text is still there, word for word. When it has changed, we read the new page and update the row. We run the script by hand, before launch and on demand. It does not run on a schedule.
Something doesn’t match?
Use “Report this setup” in the signal check to include your Mac, screens, connections and predicted result automatically. Tell us what happened and include an Apple or manufacturer link if it helps. Reports are private and do not require an account.
Not affiliated with Apple
Plug & Port is an independent site. Apple does not make, check or endorse it. Apple and Mac are trademarks of Apple Inc.