| Connector |
Type |
Description |
| J3 |
4-pin connector |
Provides auxiliary terminator power (TermPWR)
source for SCSI channels. J3 accepts a 4-pin Molex plug typically used for diskette
drives. Use auxiliary TermPWR if you have wide termination on 2 SCSI channels with at
least 1 channel having wide termination. Use this connector only when the J17 and/or J20
jumpers are configured for auxiliary-source SCSI TermPWR. |
| J4 |
68-pin connector |
Channel 0 wide (16-bit) SCSI. |
| J5 |
68-pin connector |
Channel 1 wide (16-bit) SCSI. |
| J8 |
50-pin connector |
Channel 0 (8-bit) SCSI. |
| J10 |
4-pin connector |
Connector for the hard-disk drive LED on the
computer enclosure. The LED indicates data transfers on either of the SCSI channels. |
| J11 |
50-pin connector |
Channel 1 (8-bit) SCSI. |
| J12 |
2-pin connector |
Connector for the cache LED on the computer
enclosure. The LED indicates when the data in the cache has not yet been written to the
storage devices. |
| J15 |
9-pin connector |
Serial port connector. |
| J26 |
68-pin connector |
External 68-pin high-density SCSI
channel 1. |
| J18 |
72-pin (� 36) socket |
Bank 1 (odd) SIMM socket. |
| J19 |
8-pin connector |
Cache battery backup connector. |
| J21 |
20-pin connector |
Cache battery backup connector. |
| J22 |
72-pin (� 36) socket |
Bank 0 (even) SIMM socket. |
| J27 |
68-pin connector |
External 68-pin high-density SCSI
channel 0. |
| J28 |
3-pin Berg connector |
Chipset selector. |
= jumpered 
= unjumpered 
