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12V 8-pin CPU Power Connectors
JPWR1 and JPWR2 are the 8-pin 12V DC power input for the CPU or alternative single
power source for a special enclosure when the 24-pin ATX power is not in use. Refer to the
table below for pin definitions.
4.2 Headers and Connectors
Fan Headers
There are seven fan headers on the motherboard. These are 4-pin fan headers; pins 1-3
are backward compatible with traditional 3-pin fans. The onboard fan speeds are controlled
by Thermal Management in BIOS. When using Thermal Management setting, please use all
3-pin fans or all 4-pin fans.
Serial Port
There is a COM header (COM2) on the motherboard. The COM port and header provide
serial communication support. See the table below for pin definitions.
M.2-CPU1 Slot
The X11DAi-N has one M.2 slot that is supported by CPU1 (M.2-CPU1). M.2 was formerly
called Next Generation Form Factor (NGFF) and are used to replace mini PCI-E. M.2 supports
a variety of card sizes with increased functionality and spatial efficiency. The M.2 socket on the
motherboard supports PCI-E 3.0 x4 (32 Gb/s) SSD cards in the 2280 and 22110 form factors.
Chapter 4: Motherboard Connections
12V 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 8
+12V
Fan Header
Pin Definitions
Pin#
Definition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
4
PWM Control
39
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