About Onvian USB Bluetooth Adapter
Onvian USB Bluetooth Adapter CSR 4.0 Dongle Receiver Transfer Wireless Adapter USB 3.0 introduces radio frequency interference in the 2.4GHz to 2.5GHz range. The metal of your tower-style computer case will block the Bluetooth signal, so don't plug the adapter into the back of the computer, because there is more radio interference and the metal case blocks the signal. Bluetooth 4.0 Ultra-low power consumption to extend the battery life of a laptop or portable device Bluetooth-enabled smartphones, tablets, keyboards, mice, speakers, printers and headsets are all cordless devices.
