DIYRe has some of the most beginner/intermediate builder friendly tools/guides on the market. This project is simply one of the easiest on the site with the most difficult part (clamping the connectors on the ribbon) taken care of. Take your time on this to make sure orientation & solder joints are to your liking, altogether shouldn’t take more than 15-20min. Clean up the solder joints & trim before attaching the ribbon to the 500-card receiver side or you’ll risk melting the ribbon with your iron. Overall a great product, was a really snug fit on my RN R6 500 rack, the slots hadn’t been used yet, but still a bit of a push. I think if the male connector to the rack on the PCB had some ears/handle protrusions for getting a good grip to push or really pull from the rack’s card slot would make this a very complete tool. Even without it tho it still is that, very useful & a must for anyone building or using 500-series modules.