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System Installation
J31: Internal Keyboard Connector
PIN No.
1
2
3
4
5
6
7
8
Signal Description
MDAT_PSMS
MCLK_PSMS
Ground
KDAT_KBC
KDAT_CON
KCLK_KBC
KCLK_CON
+V5
J34: Miscellaneous IO Connector
PIN No.
Signal Description
1
Speaker Out Left
3
General Purpose Output 1
5
DTR#4
7
RTS#4
9
Speaker Out Right
11
CTS#2
13
DSR#2
15
TXD#2
17
DCD#2
19
CTS#1
21
DSR#1
23
TXD#1
25
DCD#1
27
Keyboard Clock
29
Mouse Clock
31
USB Port 5 Data+
33
USB Port 4 Data+
35
RXD#4
37
LPT Data 0
39
LPT Data 2
41
LPT Data 4
43
LPT Data 6
45
LPT ACK
47
LPT Busy
49
LPT AFD
51
LPT INIT
53
LAN Pin7&8
55
LAN Pin4&5
57
LAN RX59
LAN TXFEB-4720
User’s Manual
PIN No.
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Signal Description
General Purpose Input
General Purpose Output 0
DSR#4
CTS#4
TXD#4
RI#2
RTS#2
DTR#2
RXD#2
RI#1
RTS#1
DTR#1
RXD#1
Keyboard Data
Mouse Data
USB Port 5 DataUSB Port 4 DataLPT Strobe
LPT Data 1
LPT Data 3
LPT Data 5
LPT Data 7
LPT PE
LPT SLCT
LPR ERR
LPT SLIN
LAN Pin7&8
LAN Pin4&5
LAN RX+
LAN TX+
2-9