The ATEN 2-in-1U Mounting Kit allows you to combine the CL3800/CL3700/CL3100 LCD KVM Console with a rack KVM switch in 1U of space, which helps users save space for a more convenient and flexible working environment. 1x Standard Installation Rack Rail Set 2x Velcro Cable Management Straps 1x M4*6 Type I Screw Set (2 screws) 1x M3*8 Flathead Screw Set (9 screws) 1x Hind KVM Stabilizing Set (4 rack ears) 1x User Instructions