USB 5.1 Bluetooth Adapter Bluetooth 5.0 Receiver Wirele Bluethooth Dongle 4.0 Music Mini Bluthooth Transmitter For PC Computer Chip: Realtek 8761B Interface: USB 2.0 Transfer rate: 3MbpsBluetooth Version: Bluetooth V5.1/5.2/4.0+EDR Frequency Band: 2.4hz Color: Black Item Size: 21x16x5 mmReceiving Range: About 30M, In an open environment UP TO 50M Operation System: Windows7/ 8/ 10/ / 2000/ 98/ Me etc.Not support : windows xp/ vista , linux , mac os Bluetooth adapter 5.1 + EDR: The Bluetooth USB adapter uses the latest upgraded Bluetooth 5.1 + EDR technology. The anti-interference ability and stability is enhanced, and the transmiion efficiency lo caused by interference in the 2.4 GHz frequency band is reduced.More Stable Connection: The Bluetooth 5.1 dongle has a more stable connection with transmiion rate of up to 3Mbps. The configuration of Bluetooth low energy (BLE) and dual-mode Bluetooth transmiion can obtain faster data transmiion speed. The transmiion distance can reach up to 20m in an open place.Wide Range of Applications: The wirele Bluetooth adapter can connect multiple devices, such as Bluetooth speakers, keyboards, headsets, and mice. You can make full use of the Bluetooth adapter to wirelely transfer files while enjoying music.Ultra-Small Size: The stylish and compact design makes the Bluetooth receiver perfect for placing on a laptop or PC without even noticing it. You can easily carry it on your laptop without blocking the USB ports next to it.System support: USB Bluetooth adapter only supports Windows 11 / 10 / 8.1 / 8 / 7 (Not support Mac, Linux, TV, car stereo, PS4 or xbox). Driver is required. Backward compatible with Bluetooth 4.2/4.0/3.0/2.1.