Patent ID: 7913019

Claim:
A server comprising: a server module equipped with a processor, and an I/O module equipped with an I/O extension slot for accommodating an I/O extension adapter to expand said server's I/O capacity, and a management module manacling at least these modules, wherein said server module and said I/O extension slot are interconnected using a PCI Express interface and said I/O module and said management module are interconnected using a special interface carrying detection information indicating whether said I/O extension adapter is actually mounted, said server determining, using said detection information obtained via said special interface, the status of a link on said PCI Express interface in the event of a failure in said link, wherein said management module is equipped with a processing unit determining, using said special interface, whether said I/O extension adapter is mounted or not and a memory unit holding, as configuration information concerning said I/O extension slot, the information obtained by said processing unit indicating whether said I/O extension adapter is mounted or not and said server module is equipped with a first management unit performing power control of said server module and reset control of devices mounted on said server and further wherein said first management unit determines, using said configuration information, whether said link is in normal state.