Jumpers - Supermicro AOC-2UR68G4-m2TS User Manual

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Jumpers

Explanation of Jumpers
To modify the operation of the add-on card, a jumper can be used to choose be-
tween optional settings. A jumper creates shorts between two pins to change the
function of the connector. See the add-on card layouts on pages 2-1 and 2-2 for
the jumper locations.
Note: On two-pin jumpers, "Closed" means the jumper is on and "Open"
means the jumper is off the pins.
3.3V Standby Power Enable
The 3.3V Standby Power Enable jumper, located at JP3, is used to turn on or turn
off 3.3V standby power. To turn 3.3V standby power on, close pins 1-2 to enable
NC-SI, BMC management, shared LAN1, and WoL (Wake-on-LAN) support during
standby. Close pins 3-4 to turn 3.3V standby power off, which will also disable the
connections to NC-SI, BMC, shared LAN1, and WoL during standby. The default
setting is 3.3V Standby Off on pins 3-4. Refer to page 2-1 for JP3 location.
Warning: Please check with your local Supermicro FAE or contact
Supermicro Technical Support before you change the JP3 jumper to en-
able 3.3V Standby On. Staying in the standby state for a long period of
time without the fan blowing air inside the chasis may cause the onboard
Mellanox chipset to overheat.
Chapter 2: Hardware Components
2-5