5.0 Receiver Black Portable Dual Function Multi-function Usb Rtl8761b bluetooth-compatible Transmitter Gamepad Adapter Description: Specifications: Product: receiver transmitter Color: gray BT：5.0 Connection distance: 20m (unobstructed) Accessories: 1* adapter 1* -ROM Specifications: December 2021 New adapter receiver transmitter   This is a semi-transparent square design. When it is plugged into the USB interface of the computer, it will give off a shimmer. It is very beautiful, and there are few exposed parts, so it is not easy to hit.   It can be used to connect speakers, headsets, or mouse and keyboard for notebook computers or desktop computers. It can also be used to connect gamepad to computer.   With automatic memory function, after the first pairing connection, the subsequent use can automatically connect devices.   Can be freely connected within 20 meters without barriers.   It is a good device connector for reception and output. Package Included: 1* receiver and transmitter 1* -ROM (with driver inside, required when connecting to printer) Notes: Note: -ROM is the driver that needs to be downloaded when connecting to the printer. In cases, headsets, speakers, game consoles, etc. are all plug-and-play without downloading any programs.