A 'sparse' entry containing device detail information for
an installed and (possibly) active device on this host system,
augmenting a basic entry in the 'hrDeviceTable' of the
IETF Host Resources MIB (RFC 2790).
Usage: An entry in this table MAY be used to store specialized
information for a device, such as 'lifetime' information for a
CRU ('customer replaceable unit'), eg, a paper tray feed head.