With these 3U server rack rails, you can mount non-rackable devices, such as desktop servers, network devices, or KVM switches, in your 19" server rack without sacrificing an additional rack unit, as would be the case with conventional shelves. The rack rails are also an excellent solution for securing devices with damaged rails or discontinued OEM devices, such as Dell, IBM, HP, or Apple servers, for which no rack rails are available anymore. This TAA-compliant product meets the requirements of the US Federal Trade Agreements Act (TAA) and allows purchases under the Government Services Administration Schedule (GSA program) of the US government.