Here is the pin-out information for various Apple monitor cables. The Apple part number is molded into the connector housing of all Apple monitor cables. For additional information on signal descriptions see the "Guide To The Macintosh Family Hardware" available from APDA and Addison Wesley.
Cable Part #: 590-0161
Used On: Hi-Res Monochrome Monitor, Hi-Res RGB Monitor
| DB-15 | Description | DB-15 |
| 1 | Red Video Gnd | 1 |
| 2 | Red Video | 2 |
| 3 | Comp. sync | 3 |
| 4 | Comp. sync Gnd | 4 |
| 5 | Green Video | 5 |
| 6 | Green Video Gnd | 6 |
| 7 | N/C | 7 |
| 8 | N/C | 8 |
| 9 | Blue Video | 9 |
| 10 | N/C | 10 |
| 11 | N/C | 11 |
| 12 | N/C | 12 |
| 13 | Blue Video Gnd | 13 |
| 14 | N/C | 14 |
| 15 | N/C | 15 |
| Shell | Shield Gnd | Shell |
Cable Part #: 590-4161
Used on: Hi-Res Monochrome Monitor, Hi-Res RGB Monitor,and future monitors
| DB-15 | Description | DB-15 |
| 1 | Red Video Gnd | 1 |
| 2 | Red Video | 2 |
| 3 | Comp. sync | 3 |
| 4 | Sense ID 1 | 4 |
| 5 | Green Video | 5 |
| 6 | Green Video Gnd | 6 |
| 7 | Sense ID 2 | 7 |
| 8 | N/C | 8 |
| 9 | Blue Video | 9 |
| 10 | Sense ID 3 | 10 |
| 11 | Comp. sync Gnd | 11 |
| 12 | N/C | 12 |
| 13 | Blue Video Gnd | 13 |
| 14 | N/C | 14 |
| 15 | N/C | 15 |
| Shell | Shield Gnd | Shell |
Cable Part #: 590-0615
Used on: Portrait Display, Two-Page Display
| DB-15 | Description | DB-25 |
| 1 | H. sync Gnd | 14 |
| 2 | V. sync Gnd | 12 |
| 3 | Sense ID 3 | 10 |
| 4 | Sense ID Gnd | * |
| 5 | C. sync | 3 |
| 6 | H. sync | 15 |
| 7 | V. sync Gnd | 11 |
| 8 | Sense ID 2 | 7 |
| 9 | Sense ID 1 | 4 |
| 10 | C. sync Gnd | N/C |
| A1(in) | Blue Video | 9 |
| A1(out) | Blue Video Gnd | 13 |
| A2(in) | Green Video | 5 |
| A2(out) | Green Video Gnd | 6 |
| A3(in) | Red Video | 2 |
| A3(out | Red Video Gn | 1 |
| Shell | Shield Gnd | Shell |
* Note that pins 4, 7, 10 are tied together on the DB-15 side
Cable Part #: 590-0574
Used on: Portrait Display, Two-Page Monochrome Display
| DB-25 | Description | DB-25 |
| A1(in) | Mono Video | A1(in) |
| A1(out) | Mono Video Gnd | A1(out) |
| 1 | H. sync Gnd | 1 |
| 2 | V. sync Gnd | 2 |
| 3 | Sense ID 3 | 3 |
| 4 | Sense ID Gnd | 4 |
| 5 | C. sync | 5 |
| 6 | H. sync | 6 |
| 7 | V. sync Gnd | 7 |
| 8 | Sense ID 2 | 8 |
| 9 | Sense ID 1 | 9 |
| 10 | C. sync Gnd | 10 |
| Shell | Shield Gnd | Shell |
Cable Part #: 590-0562
Used on: Two Page Display
| DB-25 | Description | DB-25 |
| A1 | Mono Video | A1 |
| A2 | 75* termination | A2 |
| A3 | 75¢ termination | A3 |
| 1 | H. sync Gnd | 1 |
| 2 | V. sync Gnd | 2 |
| 3 | Sense ID 3 | 3 |
| 4 | Sense ID Gnd | 4 |
| 5 | C. sync | 5 |
| 6 | H. sync | 6 |
| 7 | V. sync Gnd | 7 |
| 8 | Sense ID 2 | 8 |
| 9 | Sense ID 1 | 9 |
| 10 | C. sync Gnd | 10 |
| Shell | Shield Gnd | Shell |
Cable Part #: 590-0536
Used On: AppleColor RGB, AppleColor 100 (replaces original cable)
| DB-15 | Description | DB-15 |
| 1 | Red Video Gnd | 1 |
| 2 | Red Video | 2 |
| 3 | Comp. sync | 3 |
| 4 | N/C | 4 |
| 5 | Green Video | 5 |
| 6 | Green Video Gnd | 6 |
| 7 | N/C | 7 |
| 8 | N/C | 8 |
| 9 | Blue Video | 9 |
| 10 | XRGB8 (Apple ///) | 10 |
| A1(in) | N/C | 11 |
| A1(out) | N/C | 12 |
| A2(in) | Blue Video Gnd | 13 |
| A2(out) | N/C | 14 |
| A3(in) | N/C | 15 |
| Shell | Shield Gnd | Shell |
VGA Adapter 513-0091-A
Used On: ASD 17 and ASD 21 monitor
| HD-B15F | Description | DB-15M |
| 1 | Red Video | 1 |
| 2 | Green Video | 5 |
| 3 | Blue Video | 9 |
| 4 | ID Bit 1 | 4 |
| 5 | H Sync Gnd | 14 |
| 6 | Red Gnd | 2 |
| 7 | Green Gnd | 6 |
| 8 | Blue Gnd | 13 |
| 9 | DDC 5V | 8 |
| 10 | V Sync Gnd | 11 |
| 12 | DDC (SDA)/ID Bit 3 | 10 |
| 13 | H Sync | 15 |
| 14 | V Sync | 12 |
| 15 | DDC (SCL)/ID Bit 2 | 7 |