Editing PCI Express (section)

===== 6- and 8-pin power connectors =====
[[File:PCI Express Power Supply Connector-female PNr°0438.jpg|thumb|upright=1.25|8-pin (left) and 6-pin (right) [[Molex Mini-fit Jr.|power connectors]] used on PCI Express cards]]

Optional connectors add {{val|75|ul=W}} (6-pin) or {{val|150|ul=W}} (8-pin) of +12&nbsp;V power for up to {{val|300|ul=W}} total ({{nowrap|2 @ 75&nbsp;W + 1 @ 150&nbsp;W}}).
* Sense0 pin is connected to ground by the cable or power supply, or float on board if cable is not connected.
* Sense1 pin is connected to ground by the cable or power supply, or float on board if cable is not connected.

Some cards use two 8-pin connectors, but that has not been standardized {{as of|lc=y|2018}}. Therefore, such cards must not carry the official PCI Express logo. This configuration allows 375&nbsp;W total ({{nowrap|1 @ 75&nbsp;W + 2 @ 150&nbsp;W}}) and will likely be standardized by PCI-SIG with the PCI Express 4.0 standard.{{Update inline|reason=PCI Express is at 5.0 already…|date=May 2021}} The 8-pin PCI Express connector should not be confused with the [[EPS12V]] connector, which is mainly used for powering SMP and multi-core systems. The power connectors are variants of the Molex Mini-Fit Jr. series connectors.<ref name="JuErgh" />
{| class="wikitable" style="background:white; border:0"
|+ Molex Mini-Fit Jr. part numbers<ref name="JuErgh" />
! Pins
! Female/receptacle <br />on PS cable
!Male/right-angle <br />header on PCB
|-
|6-pin
|45559-0002
|45558-0003
|-
|8-pin
|45587-0004
|45586-0005, 45586-0006
|}
{| class="wikitable" style="border:0"
! colspan=2 style="background:white; border:0" | 6-pin power connector (75&nbsp;W)<ref name="o2GFI" />
| rowspan=10 style="border:0; background:white"|
! colspan=2 style="background:white; border:0" | 8-pin power connector (150&nbsp;W)<ref name="uLc7Q" /><ref name="CEM3.0" /><ref name="mcd6L" />
| rowspan=10 style="border:0;background:white"| [[File:PCIe6connector.svg|thumb|185px|<small>6 pin power connector pin map</small>]]<br />
                               [[File:PCIe8connector.svg|thumb|224px|&emsp;&emsp;<small>8 pin power connector pin map</small>]]
|-
! Pin !! Description
! Pin !! Description
|-
| {{0}}1 || +12&nbsp;V
| {{0}}1 || +12&nbsp;V
|-
| {{0}}2 || {{n/a|Not connected (usually +12&nbsp;V as well)}}
| {{0}}2 || +12&nbsp;V
|-
| {{0}}3 || +12&nbsp;V
| {{0}}3 || +12&nbsp;V
|-
| colspan=2 style="background:white; border:0" |
| {{0}}4 || Sense1 (8-pin connected{{efn-ua|When a 6-pin connector is plugged into an 8-pin receptacle the card is notified by a missing ''Sense1'' that it may only use up to 75&nbsp;W.}})
|-
| {{0}}4 || Ground
| {{0}}5 || Ground
|-
| {{0}}5 || Sense
| {{0}}6 || Sense 0 (6-pin or 8-pin connected)
|-
| {{0}}6 || Ground
| {{0}}7 || Ground
|-
| colspan=2 style="background:white; border:0" |
| {{0}}8 || Ground
|}
{{notelist-ua}}