ClearFog LX2162 mPCI-E Assembly Option
Revisions and Notes
Date
Owner
Revision
Notes
17/09/2025
Josua
1
release
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Introduction
LX2162A Clearfog board has 2x mini-pcie connectors by default supporting just USB-2.0 interface.
There is an assembly option for rerouting lanes from 2x RJ45 ports to the mpcie connectors, enabling PCI-E Gen. 3 x1 on each connector while disabling 2x RJ45 ports.
This page describes the required rework.
Electrical Rework
Component
Description
Part Number
capacitor 100nF
CAP CER 0.1uF ±10% 25V X7R 0402 Low ESR
e.g. 0402X104K250SNT
resistor 0-Ohm
RES SMD 0 OHM JUMPER 1/16W 0402
e.g. CR0402-J/-000GLF
Part Label
Part
Action
C130
capacitor 100nF
remove
C131
capacitor 100nF
remove
C137
capacitor 100nF
remove
C138
capacitor 100nF
remove
C153
capacitor 100nF
remove
C154
capacitor 100nF
remove
C157
capacitor 100nF
remove
C158
capacitor 100nF
remove
C3122
capacitor 100nF
place (reuse removed parts)
C3123
capacitor 100nF
place (reuse removed parts)
C3124
capacitor 100nF
place (reuse removed parts)
C3125
capacitor 100nF
place (reuse removed parts)
R59
resistor 0-Ohm
place
R60
resistor 0-Ohm
place
R65
resistor 0-Ohm
place
R67
resistor 0-Ohm
place
Components are located next to the 8-port ethernet phy near SoM and RJ45 connectors, covered by the black heatsink.
Software Changes
The default software images are configured for 8xRJ45 ports, and zero PCI-E. After rework images with SerDes #2 protocols 7 or 11 should be selected instead - indicated by including these numbers within their filenames, e.g. “lx2162a_rev2_som_clearfog_multi_2000_650_2900_18_11_0-daa413c.img.xz“.
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