Full height and low profile vented, Host Bus Type x8 lane PCI Express® 3.0 , Physical Dimensions Low profile (2.6” x 6.0”), two X4 external mini-SAS HD SFF8644 Ports, Data Transfer Rates 12Gb/s SAS 3.0 compliant, Devices Supported 1024 Non-RAID SAS/SATA devices, 9300-8e.