etee SteamVR dongle
They might look different but they are our equivalent to HTC Vive dongles (watchman) and operate exactly the same. Each dongle allows the user to add an addition tracker or controller to their SteamVR system.

  1. 1 dongle can only connect to a single SteamVR device: so for a pair of Index controllers, you need 2 dongles. 

etee controller dongle

This is the dongle for etee controllers and operate with different wireless protocols which allows it to connect to 2 etee Controllers at a time: a pair of left and right etee controllers.