EVGA X299 DARK (151-SX-E299)
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M.2 and U.2 Slot Breakdown (Skylake-X)
PCIe Lane Distribution (Core
™
i9-79xx, 44 Lane
Processors)
U.2(PU1) x4 PCIe Gen 3 lanes from CPU
o
Must be enabled in BIOS, which disables M.2 110mm
U.2(PU2) x4 PCIe Gen 3 lanes from CPU
M.2 Key-M (110mm) PM1 – x4 PCIe Gen 3 lanes from CPU
o
Supports PCIe/NVMe only
o
Must be enabled in BIOS, which disables U.2(PU1)
M.2 Key-M (80mm) PM2 – x4 PCIe Gen 3 lanes CPU or PCH based on
configuration.
o
Supports Optane
™
/PCIe/NVMe
o
If PE6 is populated by a video card (anything using x8 lanes) this
receives x4 lanes from PCH, otherwise x4 lanes from the CPU are used
when PE6 is empty.
M.2 Key-E (32mm) PE – x1 PCH lane
PCIe Lane Distribution (Core
™
i7-78xx, 28 Lane
Processors)
U.2(PU1) x4 PCIe Gen 3 lanes
o
Must be enabled in BIOS, which disables M.2 110mm
U.2(PU2) (44 Lane CPU ONLY)
M.2 Key-M (110mm) PM1 – x4 PCIe Gen 3 lanes from CPU
o
Supports PCIe/NVMe only
o
Must be enabled in BIOS, which disables U.2(PU1)
M.2 Key-M (80mm) PM2 – x4 PCIe Gen 3 lanes from PCH
o
Supports Optane
™
/PCIe/NVMe
o
Must be enabled in BIOS, which disables PE6
M.2 Key-E (32mm) – x1 PCH lane
