... , 18 slots, including 16 data slots and 2 power slots, 4U hight, power supply: 220V, dual power backupsSPC-CHAS02-DC19'' rack ... , 18 slots, including 16 data slots and 2 power slots, 4U hight, power supply: -48V, dual power backupsKSPC-POWER-ACPower supply ... management card for SPC-CHAS02 16 slots Fiber Optic Media Converter Network Management Chassis