1. Interface: 2 internal SATA interfaces, 1 ATA133 interface, 2 external ESATA interfaces (external ESATA and internal SATA can only use 2 at the same time, select by jumper, the default is 2 internal SATA interfaces). 2. Support RAID 0, RAID 1, RAID 0and1 mode, support JBOD. Compliant with PCI-Express 1.0 standard, PCI-Express speed is 2.5 or s full duplex. 3. The driver supports Windows 2000 or xp or 7 or 8 or server 2003 or xp 64 bit or Vista, Mac, Dos. 4. Supports Ultra ATA 133 hard drives and supports Ultra ATA 100 or 66 or 33 standards down 5. Supports 1 external ESATA interface and 1 internal SATA interface, transfer rate up to 3 GB or s and supports SATA 1.0 standard. specification: RAID array: support RAID 0, RAID 1, RAID 0and1 mode, support JBOD Transmission rate: 133MB or s, ATA133 Chip: JMB363 Support hard disk capacity (LBA mode 48 bit): 137GB or more One IDE interface: supports up to 2 IDE devices Material: PC and metal color: black Package Contents: 1 x express expansion card Only the above package, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is 1-3 cm.