Let you your devices (pc, laptop, etc) have usb bt 4.0 capability, so your devices will be capable to communicate with your bluetooth devices
New features of bluetooth 4.0:
superior signal penetration capability, penetrate wall easily without losing signal; class 2 specs transmission which is 20m.
Dual-channel, you can connect two bluetooth devices simultaneously for data transmission;
meet the 4.0 standard specification, high speed, low power consumption;
can be connected to smart phones and other smart bluetooth devices.
Other features of bt 4.0:
great compatibility, stable, and high speed. Downward supports bt 2.1+ edr, bt 3.0+ hs, bt4.0 ble.
Drive free, support win7/win8/win10/vista/xp and other mainstream operating systems. Need driver for audio streaming.
Supports bluetooth class i standard, so bluetooth devices have greater coverage
supports wake-on-wlan and wake-on-bluetooth function makes wireless terminal device saving more power