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 0, 1, 0 and 1 mode, support JBOD. Comply with PCI-Express 1.0 standard, PCI-Express speed is 2.5 or s full duplex channel. 3. The driver supports Windows 2000 or xp or 7 or 8 or server 2003 or xp 64 bit or Vista, , Dos. 4. Supports Ultra ATA 133 hard disks, and supports Ultra ATA 100 or 66 or 33 standards downwards 5. Support 1 external ESATA interface and 1 internal SATA interface, transfer rate up to 3Gb or s, and support SATA 1.0 standard. specification: array: support 0, 1, 0 and 1 mode, support JBOD Transmission rate: 133MB or sec, ATA133 Chip: JMB363 Support capacity hard disk (48-bit mode): 137 GB or more One IDE interface: supports up to 2 IDE devices Material:PCandmetal colour:Black Package Contents: 1 x Express Expansion Card Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.