IBM strives to lead in the creation, development and manufacture of the industry's most advanced information technologies, including computer systems, software, networking systems, storage devices and microelectronics. And the worldwide network of IBM solutions and services professionals translates these advanced technologies into business value for the company's customers.An �extender� (connection link) between the Advanced Management Module and the BladeCenter HT midplane maintains the internal fabric and signaling between the two. One of these interposers comes standard with the BCHT chassis, but this option must be ordered if a redundant AMM is deployed in BCHT.