Asus ROG MAXIMUS Z790 HERO LGA 1700 ATX Motherboard - Manual (Page 22)

1-8 Chapter 1: Product Introduction
Chapter 1
PCIe bifurcation & M.2 settings in PCIe x16 slots for ROG Hyper M.2 Card
Slot Description
Quantity of identifiable M.2 SSD (pcs)
Situation for ROG Hyper M.2 Card
Hyper M.2_1 Hyper M.2_2
1 PCIEX16(G5)_1 PCIe 4.0 x4 -
2 PCIEX16(G5)_2 PCIe 5.0 x4/ PCIe 4.0 x4 -
3 PCIEX16(G4) PCIe 4.0 x4 PCIe 4.0 x4
• The ROG Hyper M.2 card is bundled as an accessory.
• Ensure to enable the ROG Hyper M.2 card under BIOS settings.
• When ROG Hyper M.2 card is installed on PCIEX16(G5)_1, Hyper M.2_1 slot
can support PCIe 4.0 x4 mode. When ROG Hyper M.2 card is installed on
PCIEX16(G5)_2, Hyper M.2_1 slot can support PCIe 5.0 x4 mode. When ROG Hyper
M.2 card is installed on PCIEX16(G5)_1 or PCIEX16(G5)_2, Hyper M.2_2 slot will be
disabled. When ROG Hyper M.2 card is installed on PCIEX16(G4), Hyper M.2_1 and
Hyper M.2_2 slots can support PCIe 4.0 x4 mode.
• We recommend installing the ROG Hyper M.2 card to the PCIEX16(G4) slot.
• Enable the PCIEX16(G4) to support x4/x4 mode for 2 SSDs under BIOS settings.
Recommended VGA configuration
Slot Description Single VGA Dual VGA
1 PCIEX16(G5)_1 x16 x8
2 PCIEX16(G5)_2 - x8
Connect a chassis fan to the chassis fan connectors when using multiple graphics cards
for better thermal environment.