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Chapter 4: Motherboard Connections
SATA Ports
Six SATA 3.0 ports (I-SATA0/1/2/3/4/5) are located on the X12DAi-N6 motherboard supported
by the C621A chipset. These SATA ports support RAID 0, 1, 5, and 10. In addition, there are
also two SATA ports (I-SATA6, I-SATA7) that include SATA DOM power. SATA ports provide
serial-link signal connections, which are faster than the connections of Parallel ATA.
Note
: For more information on the SATA HostRAID configuration, please refer to the Intel
SATA HostRAID user's guide posted on our website at
http://www.supermicro.com.
NVMe Connectors
Use the two NVMe connectors (JNVME1 and JNVME2) to attach high-speed PCIe storage
devices.
Note
: When installing an NVMe device on a motherboard, please be sure to connect the first
NVMe port first (JNVME1) for your system to work properly.
NVMe SMBus Headers
NVMe SMBus (I
2
C) headers (JNVI2C), used for PCIe SMBus clock and data connections,
provide hot-plug support via a dedicated SMBus interface. This feature is only available for a
Supermicro complete system with an SMCI-proprietary NVMe add-on card and cable installed.
See the table below for pin definitions.
NVMe SMBus Header
Pin Definitions
Pin#
Definition
1
Data
2
Ground
3
Clock
4
VCCIO
Chassis Intrusion
A Chassis Intrusion header is located at JL1 on the motherboard. Attach the appropriate cable
from the chassis to inform you of a chassis intrusion when the chassis is opened. Refer to
the table below for pin definitions.
Chassis Intrusion
Pin Definitions
Pin#
Definition
1
Intrusion Input
2
Ground
Speaker Header (Optional for an External Speaker/Buzzer)
A speaker header, located at JD1, can be used in conjunction with an external speaker
(optional). Use an appropriate cable to connect this header to an external speaker or buzzer
for support of BIOS beep codes and system alarms. See the layout below for JD1 location.