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Chapter 4: Motherboard Connections
Intel RAID Key Header
The JRK1 header allows the user to enable RAID functions for NVMe connections. Refer to
the table below for pin definitions.
Intel RAID Key Header
Pin Definitions
Pin#
Defintion
1
GND
2
3.3V Stdby
3
GND
4
PCH RAID KEY
SATA Ports
Eight SATA 3.0 ports are located on the X12SPM-TF/-LN4F/-LN6TF motherboard supported
by the C621A chipset via two slimSAS connectors. These SATA ports support RAID 0, 1, 5,
and 10. In addition, there are also two S-SATA ports (S-SATA0, S-SATA1) that include SATA
DOM power. SATA ports provide serial-link signal connections, which are faster than the
connections of Parallel ATA. Refer to the tables below for pin definitions.
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.
M.2 Slot
The X12SPM-RF/-LN4F/-LN6TF motherboard has one M.2 slot. 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 spacial efficiency. The M.2 socket on the
motherboard supports PCIe 3.0 x4 32Gb/s_/SATA SSD cards in the 2280 and 22110 form
factors.
SATA 3.0 Ports
Pin Definitions
Pin#
Definition
1
Ground
2
SATA_TXP
3
SATA_TXN
4
Ground
5
SATA_RXN
6
SATA_RXP
7
NC
