PCI express pin

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PCI-Express 16x PinOut 



Pin 
Side B Connector 
Side A Connector 



# 
Name 
Description 
Name 
Description 



1 
+12v 
+12 volt power 
PRSNT#1 
Hot plug presence detect 



2 
+12v 
+12 volt power 
+12v 
+12 volt power 



3 
+12v 
+12 volt power 
+12v 
+12 volt power 



4 
GND 
Ground 
GND 
Ground 



5 
SMCLK 
SMBus clock 
JTAG2 
TCK 



6 
SMDAT 
SMBus data 
JTAG3 
TDI 



7 
GND 
Ground 
JTAG4 
TDO 



8 
+3.3v 
+3.3 volt power 
JTAG5 
TMS 



9 
JTAG1 
+TRST# 
+3.3v 
+3.3 volt power 



10 
3.3Vaux 
3.3v volt power 
+3.3v 
+3.3 volt power 



11 
WAKE# 
Link Reactivation 
PWRGD 
Power Good 





Mechanical Key 



12 
RSVD 
Reserved 
GND 
Ground 



13 
GND 
Ground 
REFCLK+ 
Reference Clock

Differential pair 



14 
HSOp(0) 
Transmitter Lane 0,

Differential pair 		
REFCLK- 



15 
HSOn(0) 
GND 
Ground 



16 
GND 
Ground 
HSIp(0) 
Receiver Lane 0,

Differential pair 



17 
PRSNT#2 
Hotplug detect 
HSIn(0) 



18 
GND 
Ground 
GND 
Ground 



19 
HSOp(1) 
Transmitter Lane 1,

Differential pair 		
RSVD 
Reserved 



20 
HSOn(1) 
GND 
Ground 



21 
GND 
Ground 
HSIp(1) 
Receiver Lane 1,

Differential pair 



22 
GND 
Ground 
HSIn(1) 



23 
HSOp(2) 
Transmitter Lane 2,

Differential pair 		
GND 
Ground 



24 
HSOn(2) 
GND 
Ground 



25 
GND 
Ground 
HSIp(2) 
Receiver Lane 2,

Differential pair 



26 
GND 
Ground 
HSIn(2) 



27 
HSOp(3) 
Transmitter Lane 3,

Differential pair 		
GND 
Ground 



28 
HSOn(3) 
GND 
Ground 



29 
GND 
Ground 
HSIp(3) 
Receiver Lane 3,

Differential pair 



30 
RSVD 
Reserved 
HSIn(3) 



31 
PRSNT#2 
Hot plug detect 
GND 
Ground 



32 
GND 
Ground 
RSVD 
Reserved 



33 
HSOp(4) 
Transmitter Lane 4,

Differential pair 		
RSVD 
Reserved 



34 
HSOn(4) 
GND 
Ground 



35 
GND 
Ground 
HSIp(4) 
Receiver Lane 4,

Differential pair 



36 
GND 
Ground 
HSIn(4) 



37 
HSOp(5) 
Transmitter Lane 5,

Differential pair 		
GND 
Ground 



38 
HSOn(5) 
GND 
Ground 



39 
GND 
Ground 
HSIp(5) 
Receiver Lane 5,

Differential pair 



40 
GND 
Ground 
HSIn(5) 



41 
HSOp(6) 
Transmitter Lane 6,

Differential pair 		
GND 
Ground 



42 
HSOn(6) 
GND 
Ground 



43 
GND 
Ground 
HSIp(6) 
Receiver Lane 6,

Differential pair 



44 
GND 
Ground 
HSIn(6) 



45 
HSOp(7) 
Transmitter Lane 7,

Differential pair 		
GND 
Ground 



46 
HSOn(7) 
GND 
Ground 



47 
GND 
Ground 
HSIp(7) 
Receiver Lane 7,

Differential pair 



48 
PRSNT#2 
Hot plug detect 
HSIn(7) 



49 
GND 
Ground 
GND 
Ground 



50 
HSOp(8) 
Transmitter Lane 8,

Differential pair 		
RSVD 
Reserved 



51 
HSOn(8) 
GND 
Ground 



52 
GND 
Ground 
HSIp(8) 
Receiver Lane 8,

Differential pair 



53 
GND 
Ground 
HSIn(8) 



54 
HSOp(9) 
Transmitter Lane 9,

Differential pair 		
GND 
Ground 



55 
HSOn(9) 
GND 
Ground 



56 
GND 
Ground 
HSIp(9) 
Receiver Lane 9,

Differential pair 



57 
GND 
Ground 
HSIn(9) 



58 
HSOp(10) 
Transmitter Lane 10,

Differential pair 		
GND 
Ground 



59 
HSOn(10) 
GND 
Ground 



60 
GND 
Ground 
HSIp(10) 
Receiver Lane 10,

Differential pair 



61 
GND 
Ground 
HSIn(10) 



62 
HSOp(11) 
Transmitter Lane 11,

Differential pair 		
GND 
Ground 



63 
HSOn(11) 
GND 
Ground 



64 
GND 
Ground 
HSIp(11) 
Receiver Lane 11,

Differential pair 



65 
GND 
Ground 
HSIn(11) 



66 
HSOp(12) 
Transmitter Lane 12,

Differential pair 		
GND 
Ground 



67 
HSOn(12) 
GND 
Ground 



68 
GND 
Ground 
HSIp(12) 
Receiver Lane 12,

Differential pair 



69 
GND 
Ground 
HSIn(12) 



70 
HSOp(13) 
Transmitter Lane 13,

Differential pair 		
GND 
Ground 



71 
HSOn(13) 
GND 
Ground 



72 
GND 
Ground 
HSIp(13) 
Receiver Lane 13,

Differential pair 



73 
GND 
Ground 
HSIn(13) 



74 
HSOp(14) 
Transmitter Lane 14,

Differential pair 		
GND 
Ground 



75 
HSOn(14) 
GND 
Ground 



76 
GND 
Ground 
HSIp(14) 
Receiver Lane 14,

Differential pair 



77 
GND 
Ground 
HSIn(14) 



78 
HSOp(15) 
Transmitter Lane 15,

Differential pair 		
GND 
Ground 



79 
HSOn(15) 
GND 
Ground 



80 
GND 
Ground 
HSIp(15) 
Receiver Lane 15,

Differential pair 



81 
PRSNT#2 
Hot plug present detect 
HSIn(15) 



82 
RSVD#2 
Hot Plug Detect 
GND 
Ground

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