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See also 50-Conductor SCSI Pinout for SE and HVD Interface
See also 68-Conductor SCSI Pinout for SE and HVD Interface
| PIN# |
CABLE
PAIR |
SE/LVD |
| 1 |
30 |
SR/+DB12 |
| 2 |
31 |
SR/+DB13 |
| 3 |
32 |
SR/+DB14 |
| 4 |
33 |
SR/+DB15 |
| 5 |
34 |
SR/+DBP1 |
| 6 |
16 |
SR/+DB0 |
| 7 |
17 |
SR/+DB1 |
| 8 |
18 |
SR/+DB2 |
| 9 |
19 |
SR/+DB3 |
| 10 |
20 |
SR/+DB4 |
| 11 |
21 |
SR/+DB5 |
| 12 |
22 |
SR/+DB6 |
| 13 |
23 |
SR/+DB7 |
| 14 |
24 |
SR/+P_CRCA |
| 15 |
25 |
GND/GND |
| 16 |
15 |
DIFFSENSE |
| 17 |
14 |
TPWR/TPWR |
| 18 |
13 |
TPWR/TPWR |
| 19 |
12 |
RSVD/RSVD |
| 20 |
5 |
GND/GND |
| 21 |
6 |
SR/+ATN |
| 22 |
7 |
GND/GND |
| 23 |
4 |
SR/+BSY |
| 24 |
3 |
SR/+ACK |
| 25 |
8 |
SR/+RST |
| 26 |
9 |
SR/+MSG |
| 27 |
10 |
SR/+SEL |
| 28 |
2 |
SR/+C/D |
| 29 |
1 |
SR/+REQ |
| 30 |
11 |
SR/+I/0 |
| 31 |
26 |
SR/+DB8 |
| 32 |
27 |
SR/+DB9 |
| 33 |
28 |
SR/+DB10 |
| 34 |
29 |
SR/+DB11 |
|
| PIN# |
CABLE
PAIR |
SE/LVD |
| 35 |
30 |
-DB12/-DB12 |
| 36 |
31 |
-DB13/-DB13 |
| 37 |
32 |
-DB14/-DB14 |
| 38 |
33 |
-DB15/-DB15 |
| 39 |
34 |
-DBP1/-DBP1 |
| 40 |
16 |
-DB0/-DB0 |
| 41 |
17 |
-DB1/-DB1 |
| 42 |
18 |
-DB2/-DB2 |
| 43 |
19 |
-DB3/-DB3 |
| 44 |
20 |
-DB4/-DB4 |
| 45 |
21 |
-DB5/-DB5 |
| 46 |
22 |
-DB6/-DB6 |
| 47 |
23 |
-DB7/-DB7 |
| 48 |
24 |
-DBP/-P_CRCA |
| 49 |
25 |
GND/GND |
| 50 |
15 |
GND/GND |
| 51 |
14 |
TPWR/TPWR |
| 52 |
13 |
TPWR/TPWR |
| 53 |
12 |
RSVD/RSVD |
| 54 |
5 |
GND/GND |
| 55 |
6 |
-ATN/-ATN |
| 56 |
7 |
GND/GND |
| 57 |
4 |
-BSY/-BSY |
| 58 |
3 |
-ACK/-ACK |
| 59 |
8 |
-RST/-RST |
| 60 |
9 |
-MSG/-MSG |
| 61 |
10 |
-SEL/-SEL |
| 62 |
2 |
-C/D/-C/D |
| 63 |
1 |
-REQ/-REQ |
| 64 |
11 |
-I/O/-I/O |
| 65 |
26 |
-DB8/-DB8 |
| 66 |
27 |
-DB9/-DB9 |
| 67 |
28 |
-DB10/-DB10 |
| 68 |
29 |
-DB11/-DB11 |
|
For more detailed information on SCSI cabling including connector types, see:
- SCSI Quiet Cable™
The secret of SCSI Quiet Cable is that they are built according to the SCSI specification, consisting of 25 or 34 twisted pairs of multi-stranded 28-gauge flexible copper wires.
For an overview of SCSI cabling, see:
And for information on how to verify SCSI cable performance, see:
- Cable Cautions
SCSI whitepaper detailing the need to build SCSI cabling to the correct SCSI specifications.
And for information on how to verify SCSI cable performance, see:
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