Bios Manual
Page 24
.... Options: Enabled (Default) / Disabled / Enabled when no UEFI Driver PCI Express Configuration Onboard PCIE Giga LAN / PEX1_1 Slot / PEX1_2 Slot / PEX16_2 Slot This item controls the PCI Express Root Port. Options: Disabled (Default) / L0s / L1 / L0sL1 / Auto 23 H77MU3 UEFI BIOS Manual on board lan option rom This item enables or disables onboard LAN option ROM.
.... Options: Enabled (Default) / Disabled / Enabled when no UEFI Driver PCI Express Configuration Onboard PCIE Giga LAN / PEX1_1 Slot / PEX1_2 Slot / PEX16_2 Slot This item controls the PCI Express Root Port. Options: Disabled (Default) / L0s / L1 / L0sL1 / Auto 23 H77MU3 UEFI BIOS Manual on board lan option rom This item enables or disables onboard LAN option ROM.