Does My Laptop's USB-C Port Support a Docking Station?
USB-C ports all look the same, but they don't all do the same things. Some carry video, power and fast data. Others only carry data. Before you buy a dock, take two minutes to check what yours can do.
The three things a dock needs
- Video: to run monitors without extra software, the port must carry a DisplayPort signal.
- Power in: to charge your laptop through the dock, the port must accept USB Power Delivery.
- Data: for keyboards, drives and Ethernet. Every USB-C port does this.
Look at the symbols next to the port
- A lightning bolt means Thunderbolt. It carries video, power and fast data. Any dock will work.
- A small D-shaped DisplayPort logo means DisplayPort Alt Mode. It carries video.
- "USB4" or "40Gbps" usually means video support too.
- A battery or plug icon means the port accepts charging.
- No symbol at all is common. Check the spec sheet before assuming anything.
Check the spec sheet
Search for your exact laptop model and "specifications". Look for phrases like:
- "USB-C with DisplayPort Alt Mode"
- "Thunderbolt 4" or "USB4"
- "Power Delivery" or "USB-C charging"
If the spec sheet only says "USB-C 3.2" with no mention of DisplayPort or Power Delivery, the port may be data only.
Check how much power you need
Look at the wattage printed on your laptop's charger. A dock that delivers at least that much keeps the laptop charged under load. Thin laptops often use 45 to 65W. Larger and gaming laptops often need 90 to 100W or more. A dock like the Kensington SD3210U3, which delivers up to 100W, covers most laptops.
Gaming laptops with very large chargers often charge slowly or not at all over USB-C. Keep using the original charger for those.
A quick test
Plug a USB-C monitor, or a USB-C to HDMI adapter, into the port. If you get a picture, the port carries video and a driverless dock will work.
If your port doesn't carry video
You can still use a dock. Choose one that uses DisplayLink, which sends video over plain USB using driver software. The Anker Prime DL7400 works this way. Our Windows laptop docking station comparison covers both kinds.