A:Answer This allows you to sync and use a Sony DualShock 4 controller wirelessly on your PC. If your PC already has Bluetooth built-in, you probably don't need this, but as my PC doesn't, I couldn't tell you for sure whether the DS4 connects with standard Bluetooth protocols.
Keep in mind that your DualShock 4 WILL work with your PC if you connect it with the USB cable - this adapter simply gives you the freedom to play wirelessly.