HP 30461-69001 - 0.5MB memory board - 0.5MB Memory Board - Goes in Slot 2 of CPU Unit (Standard) - Can Also Go in Slot 3 (as an Additional Option Board - But the Memory Board in Slot 2 MUST Also be 0.5MB) Retail
HP 12159-60001 - 25KHz power module board (Goes in slot 8) - 25kHz Power Module Board (Goes in Slot 8) (12159A) Retail
HP 12102-69010 - Memory controller board - With 512KB of memory - Memory Controller Board - with 512kB of Memory (12102B) Retail
