Technical Reference Guide www.hp.com 5-11
Input/Output Interfaces
5.3.2 Diskette Drive Connector
The SFF, ST, MT, and CMT form factors use a standard 34-pin connector for diskette drives
(refer to Figure 5-3 and Table 5-9 for the pinout). Drive power is supplied through a separate
connector.
✎
The USDT form factor does not include 34-pin diskette drive connector. The diskette interface
and drive power signals are both a part of the MultiBay interface used on USDT form factors.
Figure 5-3. 34-Pin Diskette Drive Connector.
Table 5-9.
34-Pin Diskette Drive Connector Pinout
Pin Signal Description Pin Signal Description
1 GND Ground 18 DIR- Drive head direction control
2 LOW DEN- Low density select 19 GND Ground
3 --- (KEY) 20 STEP- Drive head track step cntrl.
4 MEDIA ID- Media identification 21 GND Ground
5 GND Ground 22 WR DATA- Write data
6 DRV 4 SEL- Drive 4 select 23 GND Ground
7 GND Ground 24 WR ENABLE- Enable for WR DATA-
8 INDEX- Media index is detected 25 GND Ground
9 GND Ground 26 TRK 00- Heads at track 00 indicator
10 MTR 1 ON- Activates drive motor 27 GND Ground
11 GND Ground 28 WR PRTK- Media write protect status
12 DRV 2 SEL- Drive 2 select 29 GND Ground
13 GND Ground 30 RD DATA- Data and clock read off disk
14 DRV 1 SEL- Drive 1 select 31 GND Ground
15 GND Ground 32 SIDE SEL- Head select (side 0 or 1)
16 MTR 2 ON- Activates drive motor 33 GND Ground
17 GND Ground 34 DSK CHG- Drive door opened indicator
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