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. 1 x Standard Installation Rack Rail Set 2 x Velcro Cable Management Straps 1 x M4*6 Type I Screw Set (2 screws) 1 x M3*5 Flathead Screw Set (9 screws) 1 x Hind KVM Stabilizing Set (4 rack ears) 1 x User Instructions