External Scsi Connector - Dell PRECISION 610 User Manual

B-10 Dell Precision 610 Mini Tower Systems User's Guide
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1 STB#
2 PD0
3 PD1
4 PD2
5 PD3
6 PD4
7 PD5
8 PD6
9 PD7
10 ACK#
11 BUSY
12 PE
13 SLCT
14 AFD#
15 ERR#
16 INIT#
17 SLIN#
18–25 GND
The 68-pin external small computer system interface (SCSI) connector on the system
back panel supports external Ultra SCSI devices such as scanners, ZIP drives, and
optical drives.
If you reconfigure your hardware, you may need pin number and signal information for
the external SCSI connector. Figure B-5 illustrates the pin numbers for the external
SCSI connector, and Table B-5 lists and defines the pin assignments and interface sig-
nals for the external SCSI connector.
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I/O Strobe
I/O Printer data bit 0
I/O Printer data bit 1
I/O Printer data bit 2
I/O Printer data bit 3
I/O Printer data bit 4
I/O Printer data bit 5
I/O Printer data bit 6
I/O Printer data bit 7
I Acknowledge
I Busy
I Paper end
I Select
O Automatic feed
I Error
O Initialize printer
O Select in
N/A Signal ground