AEx-P526 User Manual
21
28. LED2
:
LED STATUS. Green LED for Motherboard
Standby Power Good status.
31. CN3
:
(1.27mm Pitch 2X30 Pin Header), For expand output connector, It provides four GPIO,
Two USB 2.0,one PS/2 mouse
，
one PS/2 keyboard,two uart,one PCIe x1,one SMbus.
Function Signal Name
Pin# Pin#
Signal Name
Function
5V_S5_USB
1
2
5V_S5_USB
5V_S5_USB
3
4
5V_S5_USB
USB23_OC
5
6
CLKREQPSON_ATX-
USB2
USB2_N
7
8
USB2_P
USB2
USB3
USB3_N
9
10
USB3_P
USB3
Ground
11
12
Ground
PS/2 MS
PS2_MSCLK
13
14
PS2_MSDATA PS/2 MS
PS/2 KB
PS2_KBCLK
15
16
PS2_KBDATA
PS/2 KB
COM6
(UART)
COM6_RI
17
18
COM6_DCD-
COM6
(UART)
COM6_TXD
19
20
COM6_RXD
COM6_DTR
21
22
RICOM6_RTS
-
COM6_DSR
23
24
COM6_CTS-
Ground
25
26
Ground
COM5
(UART)
COM5_RI
27
28
COM5_DCD-
COM5
(UART)
COM5_TXD
29
30
COM5_RXD
COM5_DTR
31
32
DSRCOM5_RTS-
COM5_DSR
33
34
DTRCOM5_CTS-
GPIO24
ICH_GPIO24
35
36
ICH_GPIO13
GPIO13
GPIO26
ICH_GPIO26
37
38
ICH_GPIO27
GPIO27
Ground
39
40
Ground
PCIE
PE1_TX_N0
41
42
PE1_TX_P0
PCIE
PE1_RX_N0
43
44
PE1_RX_P0
Ground
45
46
Ground
CLK_100M_PE1_N
47
48
CLK_100M_PE1_P
PM_PCIE_WAKE
49
50
PLTRST_BUF-
SMBUS
SMB_CLK_S
5
51
52
SMB_DATA_S
5
SMBUS
