chassisCardName 1.3.6.1.4.1.207.8.4.4.3.23.1.1.3

The name of the card. E.g. AT-SBx81CFC400, AT-SBx81CFC960 for controller cards; AT-SBx81GP24, AT-SBx81GT24, AT-SBx81GS24, AT-SBx81XS6 for line cards; 'unknown' for unsupported hardware.