2-9 Floppy and SIM 1U IPMI Connections
Note the following when connecting the fl oppy and hard disk drive cables:
•The fl oppy disk drive cable has seven twisted wires.
•A red mark on a wire typically designates the location of pin 1.
• A single fl oppy disk drive ribbon cable has two connectors to provide for two
floppy disk drives. The connector with twisted wires always connects to drive A, and the connector that does not have twisted wires always connects to drive B.
Floppy Drive Connector
Pin Defi nitions (Floppy)
Floppy Connector
The fl oppy connector is located at J27. See the table below for pin defi nitions.
Pin# Defi nition
1Ground
3Ground
5Key
7Ground
9Ground
11 Ground
13 Ground
15 Ground
17 Ground
19 Ground
21 Ground
23 Ground
25 Ground
27 Ground
29 Ground
31 Ground
33 Ground
Pin # Defi nition
2FDHDIN
4Reserved
6FDEDIN
8Index
10Motor Enable
12Drive Select B
14Drive Select B
16Motor Enable
18DIR
20STEP
22Write Data
24Write Gate
26Track 00
28Write Protect
30Read Data
32Side 1 Select
34Diskette
A. Floppy
A
