PCI Express x4 Connector Pin Assignment
Row B, Pin 19
Row A, Pin 1
PIN- out for the PCIe x4 Cable
Pin #
Cable Side 1
Cable Side 2
Pin #
A1 A4 A7 A10 A13
A16 B1 B4 B7 B10
B13
GND
Drain Wires
GND
A1 A4 A7 A10 A13
A16 B1 B4 B7 B10
B13
A2
PETp0
Differential Pair
PERp0
B2
A3
PETn0
PERn0
B3
A5
PETp1
PERp1
B5
A6
PETn1
Differential Pair
PERn1
B6
Pin #
Cable Side 1
Cable Side 2
Pin #
A8
PETp2
Differential Pair
PERp2
B8
A9
PETn2
PERn2
B9
A11
PETp3
Differential Pair
PERp3
B11
A12
PETn3
PERn3
B12
A14
Differential Pair
A14
A15
CREFCLK
CREFCLK- A15
A17
SB_RTN
Hook-up Wire
SB_RTN
A17
A18
CPRSNT#
Hook-up Wire
CPRSNT#
A18
A19
CPWRON
Hook-up Wire
CPWRON
A19
B2
PERp0
Differential Pair
PETp0
A2
B3
PERn0
PETn0
A3
B5
PERp1
Differential Pair
PETp1
A5
B6
PERn1
PETn1
A6
B8
PERp2
Differential Pair
PETp2
A8
B9
PERn2
PETn2
A9
B11
PERp3
Differential Pair
PETp3
A11
B12
PERn3
PETn3
A12
B14
PWR
NC
PWR
B14
B15
PWR
NC
PWR
B15
B16
PWR_RTN
NC
PWR_RTN
B16
B17
PWR_RTN
NC
PWR_RTN
B17
B18
CWAKE#
Hook-up Wire
CWAKE#
B18
B19
CPERST#
Hook-up Wire
CPERST#
B19
Backshell
Chassis Ground
Overall Cable
Braid
Chassis Ground
Back shell
One Stop Systems, Inc. OSS-KIT-EXP-4500
Rev. A
Page 11