IMSAI Boards

CP-A-IMS

This is the list of all IMSAI boards in the catalog. We have new IMSAI boards in addition to reproductions of 1970s IMSAI boards. The reproduction boards are licensed for sale by IMSAI from RetroTechReboot. All other boards are designed and sold by the IMSAI division of Parastream Technologies.

Choose from the links below to take you to the appropriate section.

Complete Kits

Description	Part Number	Availability	Unit Price (USD)
CP-A Rev-5 complete kit with manual	CP-A	7/1/2025	$449.00
CP-A Rev-4 complete kit with manual	CP-A-IMS	In stock	$429.00
CP-A Rev-4 kit with manual (no switches)	CP-A-IMS-NS	In stock	$339.00
CP-A Rev-5 kit with manual (no switches)	CP-A-NS	7/1/2025	$359.00
EXP-22 complete kit with manual, 2 edge connectors and 2 card guides	EXP-22	5/1/2025	$129.00
EXP-22 complete kit with manual, 11 edge connectors and 20 card guides	EXP-22/11	5/1/2025	$259.00
EXP-22 complete kit with manual, 22 edge connectors and 42 card guides	EXP-22/22	5/1/2025	$475.00
MPU-A Rev-4 complete kit with manual	MPU-A	5/1/2025	$199.00
PIO 4-1 Rev-2 complete kit with manual	PIO 4-1	7/1/2025	$199.00
PIO 4-4 Rev-2 complete kit with manual	PIO 4-4	7/1/2025	$199.00
PS-28S complete kit with manual	PS-28S	5/1/2025	$299.00

Options

Description	Part Number	Availability	Unit Price (USD)
CP-A Rev-4 user manual	UM-CP-A-IMS	In stock	$20.00
CP-A Rev-5 user manual	UM-CP-A	7/1/2025	$20.00
EXP-22 Rev-1 user manual	UM-EXP-22	5/1/2025	$20.00
MPU-A Rev-4 user manual	UM-MPU-A	5/1/2025	$20.00
PIO 4 Rev-2 user manual	UM-PIO 4	5/1/2025	$20.00
PS-28S Rev-1 user manual	UM-PS-28S	5/1/2025	$20.00
Socket set for CP-A Rev-4, machined	SOCM-CP-A-IMS	In stock	$25.00
Socket set for CP-A Rev-4, standard	SOC-CP-A-IMS	In stock	$9.00
Socket set for CP-A Rev-5, machined	SOCM-CP-A	7/1/2025	$30.00
Socket set for CP-A Rev-5, standard	SOC-CP-A	7/1/2025	$10.00
Socket set for MPU-A, machined	SOCM-MPU-A	5/1/2025	$25.00
Socket set for MPU-A, standard	SOC-MPU-A	5/1/2025	$7.00

Bare Boards

Description	Part Number	Availability	Unit Price (USD)
CP-A Rev-4 bare board	CP-A-IMS-BB	In stock	$60.00
CP-A Rev-5 bare board	CP-A-BB	7/1/2025	$45.00
EXP-22 bare board	EXP-22-BB	In stock	$49.00
MPU-A Rev-4 bare board	MPU-A-BB	5/1/2025	$40.00
PIO 4 Rev-2 bare board	PIO 4-BB	7/1/2025	$40.00
PS-28S bare board	PS-28S-BB	5/1/2025	$30.00

Accessories and Parts

Description	Part Number	Availability	Unit Price (USD)
SIO 2, MIO internal cable, 26-pin card edge to DB25-F	CABLE A	7/1/2025	$40.00
PIO 4 internal cable, 50-pin card edge to two DB25-F.	CABLE B	7/1/2025	$60.00
MPU-B internal cable, 26-pin header to DB25-F.	CABLE AF	7/1/2025	$20.00
Mains power cable with disconnects, 24 inch	CABLE CG	10 day lead time	$10.00
CP-A Rev-4 data bus cable, 18 inch	CABLE K	In stock	$10.00
CP-A Rev-5 data bus cable, 6 inch	CABLE W	In stock	$8.00
Switch bracket and screws for any IMSAI CP-A	CP-A BKT	In stock	$42.00
Mounting hardware for CP-A PNL	CP-A HW	In stock	$31.00
LED and spacer kit for any IMSAI CP-A	CP-A LED	In stock	$32.00
Switch set for any IMSAI CP-A	CP-A SW	In stock	$129.00
Panels, masks, and hardware for an 'IMSAI 8080' front panel	CP-A-IMS PNL	In stock	$189.00
Edge connector and two card guides for IMSAI motherboard	EXPM	5/1/2025	$18.00