6
3.
COM Express Connector AB
•
J3: The standard COM Express connector AB location and pinouts
are shown below
Pin No.
Description
Pin No.
Description
A1
GND
B1
GND15
A2
GBE0_MDI3-
B2
GBE0_ACT#
A3
GB
B3
LPC_FRAME#
A4
GBE0_LINK100#
B4
LPC_AD0
A5
GBE0_LINK1000#
B5
LPC_AD1
A6
GBE0_MDI2-
B6
LPC_AD2
A7
GB
B7
LPC_AD3
A8
GBE0_LINK#
B8
LPC_DRQ0#
A9
GBE0_MDI1-
B9
LPC_DRQ1#
A10
GB
B10
LPC_CLK
A11
GND1
B11
GND16
A12
GBE0_MDI0-
B12
PWRBTN#
A13
GB
B13
SMB_CK
A14
GBE0_CTREF
B14
SMB_DAT
A15
SUS_S3#
B15
SMB_ALERT#
A16
S
B16
S
A17
SATA0_TX-
B17
SATA1_TX-
A18
SUS_S4#
B18
SUS_STAT#
A19
S
B19
S
A20
SATA0_RX-
B20
SATA1_RX-
A21
GND2
B21
GND17
A22
S
B22
S
A23
SATA2_TX-
B23
SATA3_TX-
A24
SUS_S5#
B24
PWR_OK
A25
S
B25
S
A26
SATA2_RX-
B26
SATA3_RX-
A27
BATLOW#
B27
WDT
A28
ATA_ACT#
B28
AC/HD_SDIN2
A29
AC/HD_SYNC
B29
AC/HD_SDIN1
A30
AC/HD_RST#
B30
AC/HD_SDIN0
A31
GND3
B31
GND18
A32
AC/HD_BITCLK
B32
SPKR
A33
AC/HD_SDOUT
B33
I2C_CK
A34
BIOS_DISABLE#
B34
I2C_DAT
A35
THRMTRIP#
B35
THRM#
