Review on StarTech.com Bluetooth Adapter - Mini Bluetooth 4.0 USB Adapter - Long Range 50m/165ft Wireless Dongle - Smart Ready LE+EDR (USBBT1EDR4), Black by Randy Bin

This is a Class 1 USB Bluetooth Adapter with standard Linux kernel support using the Linux kernel module/driver vanilla btusb.ko. Install the net-wireless/bluez package according to your Linux distribution's instructions. The following immediately activates the Bluetooth function and initiates a scan that provides the RSSI signal strength in dBm of the remote (portable) Bluetooth devices. bluetooth] # scan on You can also run btmon in another terminal during the above steps to provide additional debugging information with portable/remote Bluetooth devices. If you just want to connect to another Bluetooth device, ignore the above: # /etc /init.d/bluetooth start$ blueman-manager (blueman-manager may need to be restarted if Bluetooth USB adapter were not previously enabled. Shrug) PROS1) Ability to connect to wireless portable/remote Bluetooth devices at least 50ft (50ft) away. – 90 dBm when portable device is approximately 50 feet (50 feet) in line of sight of this USB Bluetooth adapter. – 74 dBm when a portable device is near this unit. USB Bluetooth Adapter.CONS1) The manufacturer's spec says 50 meters (164 feet) and I honestly think that's a typo! I know how easy it is to go 50 feet and the fact that it's the same number mentioned, but how meters are within specs seems to indicate a typo. It is of course possible that this is only due to the internal antenna of the Bluetooth USB adapter.