The Western Digital Caviar AC33200 3.2 GB ATA-33 Hard Drive is fully compatible with PC systems.The Hard Drive connect by: DMA/ATA-33 (Ultra) for Internal utilization. 

• ATA/ATAPI-4 (Ultra ATA/33) hard disk drive
  
• Power :Molex (4-pin)
• Form: 3.5-inch bay (101.6mm x 26.1mm)
• Capacity: 3.17 GB
• Buffer: 256 KB
• Cyl./Heads/Sectors: 6296 / 16 / 63
• Platters: 3
• Seek: 11 ms
• Track-to-track seek: 3 ms
• 5200 RPM