Amazon.com: HTC 3 Pack Vive Tracker (3.0) Vive SteamVR Base Station 2.0 for Vive Pro, Rebuff TrackBelt + 2 TrackStraps Full Body Tracking VR Bundle : Video Games
SteamVR USB Dongle for Valve Index Controllers HTC Vive Tracker Activity Receive | eBay
What is the actual function of that cuboid where the Vive Tracker USB dongle is plugged into (see picture)? : r/Vive