
SUPERSERVER
5-11 Floppy and Hard Disk Drive 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 34 wires and two connectors to provide for two fl oppy 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 Connector
Floppy Drive Connector
Pin Definitions (JFFD1)
The fl oppy connector is lo- cated on JFDD1. See the table to the right for pin defi nitions.
Pin# Defi nition
1Ground
3Ground
5Key
7Ground
9Ground
11 Ground
13 Ground
15 Ground
17 Ground
19 Ground
21Ground
23Ground
25Ground
27Ground
29Ground
31Ground
33Ground
Pin # Defi nition
2FDHDIN
4Reserved
6FDEDIN
8Index
10Motor Enable
12Drive Select B
14 Drive Select B
16 Motor Enable
18 DIR
20 STEP
22Write Data
24Write Gate
26 Track 00
28Write Protect
30Read Data
32Side 1 Select
34Diskette