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Chapter 4: Motherboard Connections
M.2 Slot
The motherboard has two M.2 slots (JMD1 and JMD2). M.2 was formerly known as Next
Generation Form Factor (NGFF) and serves to replace mini PCIe. M.2 allows for a variety of
card sizes, increased functionality, and spatial efficiency. JMD1 supports an E-Key CNVi/PCIe
3.0 x1 device in the 2230 form factor, whereas JMD2 supports an M-Key SATA/
PCIe 3.0 x4 device in the 2242 and 2280 form factors.
Buzzer
On the JD1 header, pins 1-4 are for the buzzer. If you wish to use an external speaker,
connect its cable to this header.
Buzzer
Pin Definitions
Pin #
Definition
1-4
Buzzer
Internal Speaker
The Internal Speaker (JSPKR1) is used to provide audible indications for various beep codes.
Refer to the table below for pin definitions.
Internal Speaker
Pin Definitions
Pin#
Definition
1
SPEAKER_LN_OUT
2
SPEAKER_LP_OUT
3
SPEAKER_RN_OUT
4
SPEAKER_RP_OUT
