Docks and external monitors

Most dock problems come from power, compatibility or out-of-date drivers.

1. Power the dock with its own power supply. Workstation laptops need a 130 W or larger dock supply to charge through the dock.
2. Match brands where possible. Dell docks work best with Dell laptops, and HP with HP. Mixed brands may charge but lose video or ports.
3. Use a USB-C port that supports video. Look for the Thunderbolt or DisplayPort symbol next to the port.
4. Update drivers. Install Windows Updates, your laptop's BIOS and the dock firmware from the manufacturer's site. DisplayLink docks (such as the HP USB-C Dock G2) also need the DisplayLink driver.
5. Monitor blank or duplicated? Press Windows + P and choose Extend.
6. Test the monitor directly. Connect it straight to the laptop to rule out the cable.