1、For integrated LSI SAS 2008 main control chip with 4 standard 6GB SATA / for SAS interfaces, it supports for SAS hard disk. 2、Maximum single disk capacity supports 8TB and it can connect four SATA or for SAS hard disks. 3、4 interfaces can reach 6GB full speed at the same time. And the quality is guaranteed. 4、IR and IT modes are optional, and HBA extension is supported in IT mode, further more, for RAID 0, 1 is supported in IR mode. 5、Short bezel design is for low chassis and servers, thus, you can use it with confidence. Item Type: Disk array card Interface: PCI-E x8 / x16 Support Hard Disk: Support 8TB hard disk, including SATA and for SAS; it can connect fourhard disks at the same time, which means that this card can hang up to 4 x 8TB=32TB capacity. Number of Hard Disk Interfaces: 4 Chipsatz: LSI for SAS 2008 RAID-Level: 0/1 Compatible System: Working Mode 1: IR mode Working Mode 2: IT mode (P20 version latest firmware) Size: Approx.170 x 120 x 20mm / 6.7 x 4.7 x 0.8 in 1 x RAID Card