About PortPair Guide

Why it exists

Dock listings often promise "dual 4K" or "works with Mac" without saying which Mac, which chip, or whether the lid has to be closed. For a MacBook Air those details decide whether a second monitor works at all. PortPair Guide starts from the Mac's documented limits, follows the connection hop by hop, and scores products on what their makers actually document.

Who it is for

English-speaking MacBook Air owners, mainly in the United States, setting up or fixing a desk with one or two external monitors. People sharing a desk between a Mac and a Windows laptop are covered in one dedicated guide.

What it covers today

• Five research-based reviews of docks and hubs, and a roundup of picks by chip.
• MacBook Air with M1, M2, M3, M4 and M5 chips, in detail.
• Ten guides on native video versus DisplayLink, dual 4K at 60Hz, dock charging, monitor cables and troubleshooting.

It does not yet cover MacBook Pro, Mac mini, iMac or Pro and Max chips in detail. Those Macs have different rules, and we point you to Apple's specifications rather than guess.

The limits of our evidence

Our reviews are researched, not hands-on tested. Every score is drawn from Apple and manufacturer documentation, read and dated, and applied to a published rubric. We have not physically tested any dock, cable or monitor, we have not received any product, and no page claims otherwise. When a maker's documentation does not cover a combination, we say "not documented" or "not confirmed". How we review explains the rubric and the labels.

Independence

PortPair Guide is not affiliated with Apple, Plugable, CalDigit, Anker, Synaptics or any other company named on the site. We have no affiliate programs, sponsors or advertising at present. See the disclosure for details.

Corrections and contact

If a source we cite has changed, or a statement does not match the documentation it cites, email contact@portpairguide.app. Corrected pages get a new review date. See Contact for what to include.