xcmHrDevInfoPreviousDeviceIndex 1.3.6.1.4.1.253.8.53.3.2.1.11

The value of 'hrDeviceIndex' corresponding to: a) the previous associated row in the 'hrDeviceTable'; or b) zero if this is the first associated conceptual row in a given set; or c) zero if this conceptual row is NOT part of a set.