HP Xw4550 - Workstation - 2 GB RAM Technical Reference Manual page 149

Floppy (diskette) drive
Internal serial
ENWW
Pin Signal
11 Ground
12 Unused
13 Ground
14 FLP_SEL_A#
15 Ground
16 Unused
17 Ground
Pin Signal
1 DTR2#
2 RXD2
3 CTS2#
4 DSR2#
5 TXD2
6 R12#
7 Ground
8 Ground
Connector pin descriptions 141
Pin Signal
28 FLP_WP#
29 Ground
30 FLP_RD_D#
31 Ground
32 FLP_HD_SEL#
33 Ground
34 FLP_DSKCHG#
Pin Signal
9 +5V
10 +3.3V AUX
11 RTS2#
12 COMM_B_DET#
13 DCD2#
14 -12V
15 +12V