Best Overall
Plugable UD-3900PDZ
Key details
- USB Ports
- 6x USB 5Gbps
- HDMI Outputs
- 1x 4K 30Hz, 2x 1080p 60Hz
- Wired Network
- Gigabit Ethernet
- Laptop Charging
- 100W Power Delivery
Three monitors is where dock shopping stops being fun. Most USB-C docks extend two displays on Windows and then hand a Mac two identical screens, because the laptop's own graphics can only drive so many panels. The UD-3900PDZ splits the job instead: one HDMI output runs natively off the laptop's USB-C port, and the other two are drawn by DisplayLink, the software display technology that adds screens the laptop's graphics chip won't handle on its own.
That split is why it's our top pick. One cable into a MacBook Air or a Windows laptop brings up three extended displays, six USB ports, wired Ethernet, audio and up to 100W of charging. We also like the way the outputs are ranked: the native port takes the sharpest screen at 4K, while the DisplayLink pair runs 1080p at 60Hz, which puts the resolution where the spreadsheets and the video calls are.
Two 1080p outputs is the compromise, and it bites if you already own a pair of 4K panels. A Mac also needs the DisplayLink driver installed by hand, a one-time download rather than true plug-and-play. What justifies the price is the coverage: it's the only dock here that gives you three HDMI displays on both Windows and macOS, and Plugable backs it with a two-year warranty and lifetime support.
Watch the second DisplayLink output during the first month. That's the part that goes quiet when a unit is faulty, and the warranty is what turns that from a disaster into an inconvenience.
Pros
- Three extended displays on Windows and macOS
- 100W charging through the same cable
- Six USB 5Gbps ports plus Ethernet and audio
- Two-year warranty and lifetime support
Cons
- Two of the three HDMI outputs cap at 1080p
- macOS needs a manual DisplayLink driver install
For a desk that needs three extended displays on either a Mac or a Windows laptop, this is the dock we point people to — provided 1080p on the outer two screens is acceptable.