usdERXSysSlotExpectedCardType 1.3.6.1.4.1.4874.2.2.17.1.4.2.1.8

Type of card associated with this slot through prior presence. After the card is removed, this association persists (and inhibits operation of a different card type in this slot, if one is inserted) until usdERXSysSlotControl is set to 'flush'.