wifi & bluetooth dongle plug and play 1.mini usb bluetooth 4.0 adapter with high speed up to 3mbps. 2.bluetooth low energy wireless usb dongle. 3. dual-mode bluetooth transfer. 4.low-power selectable 1.2 to 3.6 vi/o. 5.supporting bluetooth voice data. 6.supporting multiple languages. 7.compatible with bluetooth v1.2/2.0/2.1/3.0/4.0 specification: item name: bluetooth adapter chip: csr8510 interface: usb 2.0 transfer rate: 3mbps bluetooth version: bluetooth v4.0+edr frequency band: 2.400-2.480ghz color: black item size: 21x16x5 mm receiving range: about 20m operation system: windows 7/ 8/ 10/ vista/ xp/ 2000/ 98/ me etc. support ieee802.11n/g/b standard. * faster transmission. * stronger signal gain. * maximum close to the wired network. * lower delay on game and movie. * features a sleek compact design that fits into your computer's usb port with minimal protrusion making it ideal for use when traveling or in a crowded workspace. * includes the latest 11n technology, which provides a better wireless signal than previous-generation 11g. * adding wireless-n to your computer provides an excellent solution for performing everyday activities such as transferring files, browsing the internet, and downloading music. speicifications: * wireless network standards: ieee 802.11n/g/b . * frequency range: 2.4-2.4835ghz * device : wireless adapter * operation systems:windows 7/vista/xp/2000 linux 2.4/later * interface : usb 2.0