It is the teenniest thing. I just happened to find this bluetooth adapter in its package when I was op shopping. Never overlook a bargain. It means I have options. I connected my Targus USB Ultra-Mini Bluetooth 2.00 Adapter with EDR (Enhanced Data Rate) to my Ubuntu laptop and we were in business…sort of. It connected , lit up and I could send files from the laptop to my Samsung S5 phone . Sending files to the laptop from the phone was not working and no matter what I did ….nothing. That was the main reason I wanted the bluetooth connection. Yes, I can connect the wire to my phone and transfer things that way. Yes, I can use Dropbox which is very efficient when I have access to wifi. Bluetooth gives me a wireless option when I don’t want to use wires and I don’t have wifi access. It also means I can use it on my desktop computer. I googled to get help, as you do. I found this help on a Linux Mint tutorial and found by loading the Blueman programme from the Ubuntu Software Centre I could have full functionality with phone and laptop. The devices connected quickly and the files transferred easily both ways. I did not need to install the obext ftp.