User manual

27 PETp3 GND Ground
28 PETn3
Transmitter differential pair,
Lane 3
GND Ground
29 GND Ground PERp3
30 RSVD Reserved PERn3
Receiver differential pair, Lane 3
31 PRSNT2# Hot-Plug presence detect GND Ground
32 GND Ground RSVD Reserved
Notes:
1 Optional signals that are not implemented are to be left as no connects on the board side connector.
2 Reserved signals must be left as no connects on the board side connector.
3 Although support of CWAKE# is optional from the board side connector perspective, an allocated wire is mandated for the cable
assembly.
4 Board side pin-out on both sides of the Link is identical. The cable assembly incorporates a null modem for the PCIe transmit and
receive pairs.
PCI Express x16 Connector Pin Assignment
Row B, Pin 19
Row A, Pin 1
PIN- out for the PCIe x16 Cable
Designator Description
Dimension
(mm)
Tolerance
(mm)
C01 Interface Width 28.40 ±0.10
D01 Forward Edge of Plug to Forward Lower Tab 0.75 ±0.13
D02 Slot Depth 6.79 ±0.13
D04 Forward Lower Tab Width 25.53 ±0.13
D06 Snout Length 28.31 ±0.13
D07 Snout Width 34.44 +0.20/-0.05
D08 Latch Face Plane to Forward Edge of PCB 26.29 ±0.20
D09 Plug Width 53.00 ±0.05
D10 Plug Thickness 20.23 ±0.13
D11 Top of Plug to Bottom of Snout 17.18 ±0.13
D12 Side Rail Groove Length 27.60 ±0.10
D13 Snout Thickness 9.99 +0.15/-0.05
D15 Thickness Top Forward Edge of Plug 0.80 ±0.05
D16 Top of Rail Groove to Top of Tongue 6.83 +0.15/-0.05
One Stop Systems OSS-PCIe-HIB25-x16-H/T
Rev. A Page 10