Supermicro SuperServer 620BT-DNTR User Manual page 73

ME Recovery
JPME1 is used for ME Firmware Recovery mode, which will limit system resource for essential
function use only without putting restrictions on power use. In the single operation mode,
online upgrade will be available via Recovery mode. See the table below for pin definitions.
ME Recovery
Jumper Settings
Jumper Setting Definition
Pins 1-2 Normal (Default)
Pins 2-3 ME Recovery
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Chapter 4: Motherboard Connections