It probably serves me right for being slack & not looking at the computer myself/not building it myself, but, lessons learned I guess. Turns out the guys that built it never bothered connecting any, and they never provided the unused parts from the build 😡. The AMD Wraith Prism’s RGBs have two options for control cables - I opened the case up to figure out which was in use. The RGB wasn’t being detected by my system. The PC shipped with a Ryzen 7 with an AMD Wraith Prism cooler. I guess the upshot was that I got his now spare computer, which I’m using as a server.) On arrival, the PC still had intermittent hangs until I updated the BIOS, by which time my brother had given up & bought a gaming laptop. ^(Not to let my saltiness show, the shop’s “repair” was just to replace every part in the case. (I was going to look at it but never got around to it). Months ago, my brother’s PC died, and he got it “repaired” at a local shop

If you just want to know what to buy, jump aheads to the last bit The predicament Optionally, a dupont crimping tool will help.A pair of flat pliers, preferably needle-nose.About a month to wait for AliExpress shipping.Some amount of knowledge about computers, and their internals.

Wraith prism cooler rgb control