Sent wrong dongle, help!

Bought a G502 lightspeed to replace my old mouse, and its great! Feels good, came with everything in the box, completely clean and functioning, and i got a discount since i bought renewed. However there is one issue, i was sent the previous owners G915 TKL dongle, not the G502 dongle, so i cant use the mouse without the wire. I checked reddit and apparently you can reprogram the dongle or whatever inside of G-Hub, but I cant seem to find it.