Interposer for Gb Switch and Bridge Bays — (42C5300) An extender (connection link) between the Gb Switch/Bridge Bays and the BladeCenter HT midplane maintains the internal fabric and signaling between the two. One of these interposers must be ordered for each Ethernet/network switch or Pass Thru module deployed with the BCHT chassis. Note: Note that all of the existing Ethernet/network switches (Nortel, Cisco) are supported in the BCHT chassis. Feature benefits: Enhanced reliability