Common for All Units

Common Devices
Power Supply

Models 50 and 50Z [Types 8550 and 8550Z]

8550 Planar
8550 Z Planar ("Z" for Zero wait states)

Drive Controllers (Riser versions)
Riser Hack

Model 70 [Type 8570]

8570 - Common Devices

Type 1 Planar
Type 2 Planar
8570-25MHz Planar (uses 386 and 486 processor cards)
8570 Reply OEM Planar

486DLC2 Upgrade (Blue Lightning, do not confuse with single chip upgrade)
486DX-33 Upgrade (OEMd by Hypertec)