Latest Upgraded Bluetooth 5.3 dongleUsb bluetooth adapter uses the latest upgraded Bluetooth 5.3 BR+EDR technology, greatly improves the stability of the connection data transfer speed.Backward compatible with Bluetooth 5.0/4.2/4.1/4.0/2.1/2.0 dual-mode Bluetooth transmission, reduce transmission efficiency loss due to 2.4GHz band interference, improve stability and anti-interferenceConnect 7 Devices SimultaneouslyBluetooth adapter can connect seven devices at the same time without interfering with each other, Which means that you can listen to high-quality music while using the keyboard or other devices. In addition, it also has a memory function. After the first pairing, when the device is turned on again, it will automatically connect.Faster Speed, Longer RangeGet faster data transfer speeds of up to 3 Mbps, extended range of transmission distance up to 66 feet (20 meters) in open space. Note: the effective range is affected by physical barriers and radio interference.Mini USB DongleMini usb bluetooth adapter allows you to leave plugged in your laptop or PC without blocking or interfering surrounding USB ports. this mini wireless USB dongle for Bluetooth printers, speakers, headphones, headsets, keyboards.Plug & Play5.3 Bluetooth Dongle is plug and play,no need to install driversbluetooth dongle for PC supports Windows 11/10/8.1. Not work with Mac OS, Linuxcar stereo systems,XBOX,ps4 or TV(Note:Windows 7 need to install the driver manually.)