The 40-T2ST001 is an inexpensive mounting bracket that allows 1 RU devices to be mounted in the zero RU space at the side of the TigerShark 2 computer cabinet system. The beauty of the SharkSNAP system is that it simply snaps into the structural member of the T2 called SharkTRACs. SharkTRACs tie together the four-post structure of the cabinet, adding rigidity without intruding into rackable space. There are 8 SharkTRACs in every T2 cabinet, 4 on each side. The SharkSNAP device simply snaps into the SharkTRAC. Then, 1 RU devices simply snap into the SharkSNAP. No tools are required to mount 1 RU PDUs, KVM switches, or other devices. How convenient!