Works with various brands of Ultra ATA 133/100/66/33 hard disk drives and ATAPI devices including CD/ROM, CD-R/RW, DVD drives Auto-detects drive types and fine tunes to the best performance for each Ultra ATA drive Regulatory approval(s): FCC Class B (DoC) & CE RoHS compliant Two IDE 40-pin connectors Slot type: 32-bit PCI OS support: Windows 98SE/ME/NT4.0/2000/XP (32-/64-bit)/Server 2003 (32-/64-bit)/Vista (32-/64-bit) Compliant with specification, revision 2.2Com