# SCSI Internal (2.5")

This connector is for 2.5" internal harddisks.

(at the controller & peripherals)
(at the cable)

40 PIN IDC (0.75") MALE at the controller & peripherals.
40 PIN IDC (0.75") FEMALE at the cable.

Pin | Name | Dir | Description
--- | --- | --- | ---
1 | +5V |  | +5 VDC
1 | +5V |  | +5 VDC
1 | RET |  | Return (Ground?)
1 | RET |  | Return (Ground?)
1 | GND |  | Ground
2 | DB0 |  | Data Bus 0
1 | GND |  | Ground
4 | DB1 |  | Data Bus 1
1 | GND |  | Ground
6 | DB2 |  | Data Bus 2
1 | GND |  | Ground
8 | DB3 |  | Data Bus 3
1 | GND |  | Ground
10 | DB4 |  | Data Bus 4
1 | GND |  | Ground
12 | DB5 |  | Data Bus 5
1 | GND |  | Ground
14 | DB6 |  | Data Bus 6
1 | GND |  | Ground
16 | DB7 |  | Data Bus 7
1 | GND |  | Ground
18 | PARITY |  | Data Parity (odd Parity)
24 | GND |  | Ground
26 | TMPWR |  | Termination Power
32 | /ATN |  | Attention
36 | /BSY |  | Busy
24 | GND |  | Ground
38 | /ACK |  | Acknowledge
40 | /RST |  | Reset
42 | /MSG |  | Message
24 | GND |  | Ground
44 | /SEL |  | Select
50 | /I/O |  | Input/Output
46 | /C/D |  | Control/Data
24 | GND |  | Ground
48 | /REQ |  | Request
1 | RET |  | Return (Ground?)
1 | RET |  | Return (Ground?)
1 | +5V |  | +5 VDC
1 | +5V |  | +5 VDC

Note: Direction is Device relative Bus (other Devices).

Connector is: AMP 6-176135

Contributor: Joakim Ögren

Source:
Electrical Interface Spec for IBM DPRS-20810 and DPRS-21215 at IBM Hard disk drive support

Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07