ASTROTEK USB 2.0 BLUETOOTH LED CSR 5.1 SUPPORT 10-20METERS The Astrotek Bluetooth 5.1 USB Dongle, Adapter for Laptop Computer Desktop, Supports Windows 7/8.1/10/11, Wireless Transfer Headphones, Mouse, Keyboard, Smartphone, Speakers. Bluetooth adapter is quite compact, you can insert it into any USB port and simply keep it there, without blocking surrounding USB ports. Easy Carrying and Space Saving. FEATURES LED Indication: Power on Blinking Standby Backward compatible 2.0/3.0/4.0/5.0 Distance of 10-20 meters Support Bluetooth EDR data rate to 3Mbps System Support: Windows7, Win8, Win8.1, Win10/11 User Interface: Input USB 2.0 Male Output 5.1 Bluetooth Wireless Band: 2.402-2.48 Ghz Physical Characteristics: Colour: Black Distance: 10-20meters PRODUCT CONTENT 1 x Astrotek Usb 2 Bluetooth Led Csr Support 10 To 20 Meters