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PCI Express Transmit Pair 20+
PCI Express Transmit Pair 20-
Power Ground
Power Ground
PCI Express Transmit Pair 21+
PCI Express Transmit Pair 21-
Power Ground
Power Ground
PCI Express Transmit Pair 22+
PCI Express Transmit Pair 22-
Power Ground
Power Ground
PCI Express Transmit Pair 23+
PCI Express Transmit Pair 23-
Power Ground
Hot Plug presence detect. Input Signal from add in
card used to enable the reference clock of this slot.
Active low signal, +3.3V_RUN electrical level with a
10k
Power Ground
PCI Express Transmit Pair 24+
PCI Express Transmit Pair 24-
Power Ground
Power Ground
PCI Express Transmit Pair 25+
PCI Express Transmit Pair 25-
Power Ground
Power Ground
PCI Express Transmit Pair 26+
PCI Express Transmit Pair 26-
Power Ground
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
PCIE_TX20+
B33
A33
PCIE_TX20-
B34
A34
GND
B35
A35
GND
B36
A36
PCIE_TX21+
B37
A37
PCIE_TX21-
B38
A38
GND
B39
A39
GND
B40
A40
PCIE_TX22+
B41
A41
PCIE_TX22-
B42
A42
GND
B43
A43
GND
B44
A44
PCIE_TX23+
B45
A45
PCIE_TX23-
B46
A46
GND
B47
A47
PRSNT2#
B48
A48
GND
B49
A49
PCIE_TX24+
B50
A50
PCIE_TX24-
B51
A51
GND
B52
A52
GND
B53
A53
PCIE_TX25+
B54
A54
PCIE_TX25-
B55
A55
GND
B56
A56
GND
B57
A57
PCIE_TX26+
B58
A58
PCIE_TX26-
B59
A59
GND
B60
A60
RSVD
Not connected
GND
Power Ground
PCIE_RX20+
PCI Express Receive Pair 20+
PCIE_RX20-
PCI Express Receive Pair 20-
GND
Power Ground
GND
Power Ground
PCIE_RX21+
PCI Express Receive Pair 21+
PCIE_RX21-
PCI Express Receive Pair 21-
GND
Power Ground
GND
Power Ground
PCIE_RX22+
PCI Express Receive Pair 22+
PCIE_RX22-
PCI Express Receive Pair 22-
GND
Power Ground
GND
Power Ground
PCIE_RX23+
PCI Express Receive Pair 23+
PCIE_RX23-
PCI Express Receive Pair 23-
GND
Power Ground
RSVD
Not connected
GND
Power Ground
PCIE_RX24+
PCI Express Receive Pair 24+
PCIE_RX24-
PCI Express Receive Pair 24-
GND
Power Ground
GND
Power Ground
PCIE_RX25+
PCI Express Receive Pair 25+
PCIE_RX25-
PCI Express Receive Pair 25-
GND
Power Ground
GND
Power Ground
PCIE_RX26+
PCI Express Receive Pair 26+
48
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