The PowerEdge RAID Controller, Dual Channel Light (PERC3/DCL) is a 'light' version of the PERC3/DC card, having less RAM and no cache backup battery. It is a dual channel 64-bit, 66 MHz card with 64 MB RAM cache that supports RAID levels 0, 1, 5, 10, and 50. The PERC3/DCL is a PCI card which is fully hot-plug compliant, and can handle two internal, two external, or one internal and one external connection simultaneously.