SCSI-II External Hi D-Sub (Single-ended) connector

50 pin hi-density D-SUB female connector at the controller & devices

Pin	Name	Dir	Description
1-25	GND		Ground
26	DB0		Data Bus 0
27	DB1		Data Bus 1
28	DB2		Data Bus 2
29	DB3		Data Bus 3
30	DB4		Data Bus 4
31	DB5		Data Bus 5
32	DB6		Data Bus 6
33	DB7		Data Bus 7
34	PARITY		Data Parity (odd Parity)
35	GND		Ground
36	GND		Ground
37	GND		Ground
38	TMPWR		Termination Power
39	GND		Ground
40	GND		Ground
41	/ATN		Attention
42	n/c	-	Not connected
43	/BSY		Busy
44	/ACK		Acknowledge
45	/RST		Reset
46	/MSG		Message
47	/SEL		Select
48	/C/D		Control/Data
49	/REQ		Request
50	/I/O		Input/Output

Note: Direction is Device relative Bus (other Devices)

50 pin hi-density D-SUB male connector at the cable