IBM 560E User Manual
External Connector
The Port Replicator is connected through the 100-pin external
connector at the bottom of the computer. This connector is installed
on the system board and has the following pin assignments:
connector at the bottom of the computer. This connector is installed
on the system board and has the following pin assignments:
100
51
50
1
(Rear of the Computer)
Figure
2-7 (Part 1 of 2). 100-Pin External Connector Pin Assignments
Pin
Signal
Type
Pin
Signal
Type
1
GND
G
51
GND
G
2
NC
–
52
NC
–
3
AC/DC Power
W
53
AC/CD Power
W
4
AC/DC Power
W
54
AC/DC Power
W
5
AC/DC Power
W
55
AC/DC Power
W
6
AC/DC Power
W
56
AC/DC Power
W
7
NC
–
57
NC
–
8
GND
G
58
GND
G
9
NC
–
59
NC
–
10
5V
W
60
5V
W
11
NC
–
61
NC
–
12
GND
G
62
GND
G
13
GND
G
63
NC
–
14
Data Rate Select
1
1
F
64
−
Index
F
15
−
Drive Select 1
F
65
NC
–
16
Data Rate Select
0
0
F
66
NC
–
17
−
Motor Enable 0
F
67
−
Track 0
F
18
−
Direction In
F
68
NC
–
19
−
Step
F
69
−
Write Protect
F
20
Write Data
F
70
Read Data
F
21
−
Write Enable
F
71
GND
G
22
−
Head 1 Select
F
72
−
Diskette
Change
F
Type Legend:
G: Ground
W: Power line
F: Diskette drive signal
K: Keyboard/Mouse signal
S: Serial port signal
P: Parallel port signal
V: Video signal
ThinkPad 560/560E System Board
2-9