42
Chapter 3: Motherboard Connections
3.2 Jumpers
Explanation of Jumpers
To modify the operation of the motherboard, jumpers are used to choose between optional
settings. Jumpers create shorts between two pins to change the function associated with it.
Pin 1 is identified with a square solder pad on the printed circuit board. See the motherboard
layout page for jumper locations.
Note:
On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates
the jumper is either on only one pin or has been completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
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 in Recovery mode.
ME Recovery
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal (Default)
Pins 2-3
ME Recovery
RAID Key Header
A VROC RAID Key header is located at JRK1. It supports VMD used in creating optional
advanced NVMe RAID configurations. See the
RAID Key Header
Pin Definitions
Pin#
Definition
1
Ground
2
3.3V Standby
3
Ground
4
PCH_RAID_KEY