Asus Maximus VII Ranger User Manual page 118

PCI Express X4_3 Slot (Black) Bandwidth [Auto Mode]
[Auto Mode]
[PCIe X1 Mode] PCIeX4_3 slot runs at X2 mode with all slots enabled. M.2 (Socket 3)
[M.2 Mode]
[PCIe X4 Mode] PCIeX4_3 slot runs at X4 mode for high performance support. PCIeX1_2,
Intel LAN Controller [Enabled]
This item allows you to enable or disable the Intel LAN Controller.
Configuration options: [Disabled] [Enabled]
Intel LAN PXE Option ROM [Disabled]
This item appears only when Intel LAN Controller is set to [Enabled].This item allows
you to enable or disable the Intel LAN preboot execution environment (PXE) option
ROM. Configuration options: [Disabled] [Enabled]
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Two scenarios when Auto Mode is selected:
1. PCIeX4_3 slot runs at X2 mode with all slots enabled. M.2.(Socket 3)
connector are disabled.
2. PCIeX4_3 slot runs at X4 mode for high performance support.
PCIeX1_2, PCIeX1_3, and M.2.(Socket 3) connector are disabled.
module is enabled. M.2.(Socket 3) connector is disabled.
PCIeX4_3 slot runs at X2 mode for M.2 connector support. PCIeX1_2 and
PCIeX1_3 are disabled.
PCIeX1_3, and M.2 connector are disabled.
Chapter 3: BIOS setup