Specifications

1-26
Chapter 1: Product introduction
Chapter 1
PCIe operating mode
Slot/ Connector Auto Mode
mPCIe
Mode
M.2 Mode
PCIe X4
Mode
PCIeX4_1 2 4 2 2 4
M.2 1 – 1 2 –
mPCIe 1 – 1 – –
• There are two possible scenarios in Auto Mode:
1. By default, PCIEX4_1 slot runs at x2 mode, M.2 slot and mPCIe slot both runs at
x1 mode.
2. When PCIe x4 slot detects a x4 device, the bandwidth will be switched to PCIe
x4 slot for better performance. M.2 and mPCIe slot are disabled.
• In mPCIe X1 Mode, the PCIEX4_1 slot runs at x2 mode. M.2 slot and mPCIe slot
both runs at x1 mode.
• In M.2 Mode, the PCIEX4_1 and M.2 slot both runs at x2 mode. mPCIe is
disabled.
• In PCIe X4 Mode, the PCIEX4_1 slot runs at x4 mode. M.2 and mPCIe slot are both
disabled.
• To congure the PCIEX4_1 slot bandwidth option in BIOS, refer to the Onboard
Devices Configuration section on the BIOS Setup chapter.
Location on motherboard
Refer to the illustration below for the physical location of the M.2, PCIeX4_1, and mPCIe slot.