Valve has enabled support for Bluetooth on the Steam Controller via a Steam Client Beta update. The update brings support for Bluetooth Low Energy (BLE) connectivity and Valve points out that the BLE feature is required to use the Steam Link mobile PC game streaming app that will be launching soon. Gamers can change between wireless modes when the update is applied, and Valve gives some tips on when you will want to use BLE.
When streaming games to iOS or Android devices via the Steam Link app, you must use BLE connectivity. You can also use BLE when connecting the Steam Controller to a tablet or laptop that lacks a USB port of course as well. BLE will also work if you have misplaced your Steam Controller Wireless Receiver.
In other situations, Valve recommends that you use the controller’s original wireless connectivity because it is the fastest connection with the lowest latency. The original connectivity solution also supports up to four controllers per receiver and works with all major operating systems. BLE connectivity is “
If you want to try out the Steam Client Beta, you can opt