ANLENG Bluetooth 4.0 USB Dongle Adapter Broadcom BCM20702 Chip for Cellphones Headphone Mouse Printers Keyboards... Connect your computer/laptop with Bluetooth enabled devices such as cellphones, mouse, printers, keyboards, headsets etc. Newest Bluetooth v 4.0 class 2, low energy technology, backwards compatible with Bluetooth 3.0 2.1 2.0 and 1.0 equipment. Broadcom BCM20702 Bluetooth 4.0+EDR,Bluetooth low energy, Can work with 7 device at the same time. Wireless range of up to 33ft/10m. System Support: Win98/Win2000/XP/Vista/Win7/Win8/Win10. Warranty from ANLENG: 30-Day Money Back Guarantee, 12-month warranty.