EVGA Z790 CLASSIFIED User Manual page 17

EVGA Z790 CLASSIFIED (121-RL-E798)
11. M.2 Socket 3 Key-M 80mm (M.2_1, M.2_2, and M.2_3)
M.2 is an SSD form factor standard, which uses up to four PCIe lanes and
utilizes up to Gen4 speeds. Most popularly paired with NVMe SSDs, this
standard offers substantially faster transfer speeds and seek time than SATA
interface standards. All M.2 devices are designed to connect via a card-bus style
connector – rather than a dedicated data cable and power cable.
This slot supports device lengths of 80mm and 42mm.
12. PCIe Slot x16/x8*
Raptor Lake-S and Alder Lake-S processors have 20 PCIe lanes available for
routing. When a single PCIe device is installed in PE1, the CPU will allocate up
to x16 PCIe Gen5 lanes. If PCIe devices are installed in both x16 slots, both
lanes will operate at x8/x8 speeds.
* Please see the description for Physical (length) vs Electrical (lanes) on Page 21.
13. PCIe Slot x8*
Raptor Lake-S and Alder Lake-S processors allocate up to 8 PCIe lanes on PE3
for routing. When a PCIe device is installed in PE3, the CPU will allocate up to
x8 PCIe Gen5 lanes. If PCIe devices are installed in both x16 slots, both lanes
will operate at x8/x8 speeds.
* Please see the description for Physical (length) vs Electrical (lanes) on Page 21.
14. PCIe Slot x4*
PCIe x4 is a smaller form-factor PCIe card slot. These can be used for low-
bandwidth products, such as a PCIe SSD card, capture card, audio card, etc.
This slot is limited to a maximum of x4 Gen4 PCH lanes.
* Please see the description for Physical (length) vs Electrical (lanes) on Page 21.
15. Power Button
This is an onboard power button, and may be used in place of, or in
conjunction with, a front panel power button wired to the board.
Open-air or test bench chassis are best served by using the onboard power
because it removes the need to wire a Power/Reset button.
16. Reset Button
This is an onboard system reset button, and may be used in place of, or in
conjunction with, a front panel system reset button wired to the board.
Open-air or test bench chassis are best served by using the onboard power
because it removes the need to wire a Power/Reset button.
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