IBM PS/2 SCSI 60-Pin Connector SCSI-1 and SCSI-2 (Fast only)

IBM PS/2 SCSI 60-Pin Connector Layout SCSI-1 and SCSI-2 (Fast only)

see > for SCSI Interface - Electrical Specifications and
SCSI-Bus Termination (Mixing SCSI types)

(This Pinout is typically used on IBM adapter cards where a (mini-Centronics style)
Connector 77 - physically smaller connector is called for.)

Pin	Signal Name	Pin	Signal Name
1	Ground	31	Ground
2	-Data Bit(0)	32	-Attention
3	Ground	33	Ground
4	-Data Bit(1)	34	Ground
5	Ground	35	Ground
6	-Data Bit(2)	36	-Busy
7	Ground	37	Ground
8	-Data Bit(3)	38	-Acknowledge
9	Ground	39	Ground
10	-Data Bit(4)	40	-Restart
11	Ground	41	Ground
12	-Data Bit(5)	42	-Message
13	Ground	43	Ground
14	-Data Bit(6)	44	-Select
15	Ground	45	Ground
16	-Data Bit(7)	46	-Data/Control
17	Ground	47	Ground
18	-Data Bit(P)	48	-Request
19	Ground	49	Ground
20	Ground	50	-Input/Output
21	Ground	51	Ground
22	Ground	52	(open)
23	Ground	53	(open)
24	Ground	54	(open)
25	(open)	55	(open)
26	TERMPWR	56	(open)
27	Ground	57	(open)
28	Ground	58	(open)
29	Ground	59	(open)
30	Ground	60	(open)