Supports two hard drives. Supports hard drives with a capacity of more than 137 GB (48-bit LBA). Supports RAID 0, RAID 1, RAID 5, RAID 0 + 1 mode, supports JBOD. 2 internal SATA interfaces, the transfer rate is up to 1.5 Gbit / s. Supports 32-bit PCI bus; 33 MHz / 66 MHz bus speed; PCI 2.3 standard. PCI "plug and play" compatibility. Applications: 150 MB / s (theoretical value for S-ATA Rev1.0). Supports Windows 98SE / Me / 2000 / XP / NT 4.0 / XP 64-Bit / Vista, Linux Netware operating system.