Acer Altos G520 Service Manual page 96

Legacy 34-pin Floppy Connector Pin-out (J47)
Pin
29 GND
31 GND
33 GND
External DB9 Serial A Port Pin-out (J8A1)
Pin
T1 SERIAL_DCD1_FB
T2 SERIAL_RX1_FB
T3 SERIAL_TX1_FB
T4 SERIAL_DTR1_FB
T5 GND
9 Pin Header Serial B Port Pin-out (J15)
Pin
1 SERIAL_DCD2_FB
3 SERIAL_RX2_FB
5 SERIAL_TX2_FB
7 SERIAL_DTR2_FB
9 GND
COM2 Connection Selection Header (J6)
Pin
1 DSR_N
2 DSR_DCD
3 DCD_N
4 DSR_DCD
Keyboard and Mouse PS/2 Connectors Pin-Out (J2)
PS/2 Connectors
Keyboard
Mouse
87
Signal Name
Signal Name
Signal Name
Signal Name
1
2
3
4
5
6
7
8
9
10
11
12
13,14,15,16,17
Pin Signal Name
30 FRDATA#
32 FHDSEL#
34 FDSKCHG#
Pin Signal Name
T6 SERIAL_DSR1_FB
T7 SERIAL_RTS1_FB
T8 SERIAL_CTS1_FB
T9 SERIAL_RING1_FB
Pin Signal Name
2 SERIAL_DSR2_FB
4 SERIAL_RTS2_FB
6 SERIAL_CTS2_FB
8 SERIAL_RING2_FB
10 Key
Pin Signal Name
KBDATA
NC
GND
KMPWR
KBCLK
NC
MSEDATA
NC
GND
KMPWR
MSECLK
GND
Altos G520