From Observium

Force10 E-Series

F10-CHASSIS-MIB::chSysCardType.1 = INTEGER: rpmCardEF3(206)
F10-CHASSIS-MIB::chSysCardType.3 = INTEGER: lc2401E24PG3(69)
F10-CHASSIS-MIB::chSysCardType.4 = INTEGER: lc2401E24PG3(69)
F10-CHASSIS-MIB::chSysCardUpperTemp.1 = Gauge32: 34
F10-CHASSIS-MIB::chSysCardUpperTemp.3 = Gauge32: 34
F10-CHASSIS-MIB::chSysCardUpperTemp.4 = Gauge32: 34

We detect these and set their description as "Slot $index". There is also chSysCardLowerTemp which is not currently used by Force10, and is set to the same value as chSysCardUpperTemp.