Importer520 USB Bluetooth Adapter - Version 4.0 (Newest Bluetooth Version Available) Class 2 Smart Ready Adapter w/Low Energy Technology - Windows 7 32/64 Compatible Bluetooth Adapter 4.0, Bluetooth Headphones, Bluetooth Speakers, Bluetooth Windows 7 Compatible, Bluetooth Keyboard, Bluetooth Mouse, USB Bluetooth 4.0, Bluetooth Smart Ready Adapter CSR 8510 chipset Newest Bluetooth Specification Class 2 Bluetooth v 4.0 Smart Ready Adapter with low energy technology. (Also Backwards Compatible with Legacy Bluetooth Equipment) Great help for wireless connection with other bluetooth devices like mobile phones, PDAs and PCs for Compatible With 32 bit and 64 bit Windows 7/Vista/XP (Not Compatible with Mac) New Importer520 Brand Product