The Dell 6-Channel CERC SATA Raid Controller features 6 internal channels and can support upto 6 SATA devices per controller. It has 64 MB, fixed ECC SDRAM Cache Memory. It feature an audible alarm for data safety. It incorparates an Intel 80302 Intelligent I/O Processor and 3 Silicon Image SI3512 dual SATA 1.0 controllers with command queuing.