Does the VT400 require a power supply to operate? June 23, 2022 20:28 Updated No. The VT400 will operate without a power supply by drawing all necessary power from the attached laptop’s USB-C port. Related articles Does the VT400 support DisplayPort MST daisy-chain connections? Does the VT400 require drivers to operate? My VT400 did not include a power supply. Why isn't my laptop receiving power from the docking station?