Finally Bluetooth adapter works

I bought a USB Bluetooth adapter two years ago for USD 1.89 but couldn't get it to work. It ended up at the end of the drawer until I saw it again yesterday when I had to look for an old hard disc.

I gave it another try this morning and it worked! The difference? A different bluetooth headset. But it wasn't easy to set it up and I got it right only by trial and error. It is also Bluetooth version 2 and not 4 which is what we have on our phones and tablets now.