HP 298773-001 - Intel Pentium II processor - 266MHz (Klamath, 66MHz front side bus, 512KB Level-2 cache, Slot 1, ECC) - Includes heat sink and thermistor - ProSignia 200 6/266 only Retail
HP 297039-001 - Plastics kit - Includes power switch button, plunger, and spring, power switch bracket with switch, option board retainer, I/O card guide, and half height blank bezel Retail
HP 273707-001 - Motherboard (system board) with tray, for Pentium 166MHz - Does not include processor Retail