Supermicro SuperServer SYS-421GE-TNHR2-LCC User Manual page 54

Chapter 4: Motherboard Connections
PCIe 3.0 NVMe M.2 Slots
Two PCIe 3.0 x2 NVMe M.2 slots supported by Intel PCH are located at JM2_D on the
motherboard. These M.2 slots support M.2 NVMe SSDs in the 2280 and 22110 form factors.
M.2 allows for a variety of card sizes, increased functionality, and spatial efficiency. Refer to
the layout below for the locations of the M.2 slots.
MCIO NVMe Connectors
The motherboard has four MCIO x8 connectors (EJNVME1 – 4) supported by the PLX
switches. Each of these connectors supports two PCIe 5.0 x4 NVMe connections.
Note: When connecting an NVMe device to the motherboard, please be sure to connect the
first NVMe port (EJNVME1) first for your system to work properly.
In addition, there are four MCIO x8 connectors supported by the CPUs. JMCIO1A and
JMCIO1B are supported by CPU1 while JMCIO2A and JMCIO2B are supported by CPU2.
These MCIO connectors are used to connect to side switch boards for expansions.
Slim SAS Connectors (for SATA 3.0 Connection)
Two slim SAS x4 connectors are located at JS1 and JS2 on the motherboard. Each slim SAS
connector supports four SATA 3.0 connections (JS1 for SATA0 – 4 and JS2 for SATA0 – 7).
These silim SAS connectors are supported by the Intel C741 chipset. Connect proper cables
to JS1/JS2 to use SATA 3.0 connections.
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