HP 167527-001 - 12GB ATA IDE hard drive - 4,200 RPM, 2.75-inch form factor, 12.5mm high (IBM Travelstar) Retail
HP 167528-001 - 18GB ATA-4 IDE hard drive - 4,200 RPM, 2.75-inch form factor, 9.5mm high (Hitachi Travelstar) Retail