Chapter 2 – Hardware Information22Expandable HMI Panel PC OMNI-215524 GND GND25 P2_REFCLKN DIFF26 P2_RXN DIFF27 P2_REFCLKP DIFF28 P2_RXP DIFF29 GND GND30 GND GND31 P2_TXN DIFF32 CLK_PCIE_EXIO_N DIFF33 P2_TXP DIFF34 CLK_PCIE_EXIO_P DIFF35 GND GND36 GND GND37 PCIE_RXN3 DIFF38 PCIE_TXN3 DIFF39 PCIE_RXP3 DIFF40 PCIE_TXP3 DIFF2.3.6 LVDS Backlight Connector (CN17)Pin Signal Pin Signal1 VDD 2 BKL_CTL3 GND 4 GND5 BKL_EN