Dell PERC H710 RAID controller is equipped with 512Mb Internal cache and dual core PowerPC CPU that significantly enhances performance. PERC H710 is designed to be installed in a proprietary expansion slot on PowerEdge server and does not fit in regular PCI-e expansion slot. This RAID controller has two Internal mini-SAS SFF8088 and can support up-to 32 hard drives with data transfer rate up-to 6Gbps and supports the following raid levels: RAID 0 1 5 6 10 50 60. Dell PERC H710 is compatible with the following servers: Dell PowerEdge R320 R420 R520 R620 R720 R720XD