The slides are designed to work with a 4 post cabinet. The front part of the rail screws to the front post, the back part of the rail screws to the back post and the two parts of the rail screw ...
I can't believe this is so difficult. I have a 2u PowerEdge R720 that I need to remove and re-rack in a different slot. I found the little blue tabs on the side that rotate down to unlock the pins, ...