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Chapter 4: Motherboard Connections
Power SMB (I
2
C) Header
The Power System Management Bus (I
2
C) connector (JPI
2
C1) monitors the power supply,
fan, and system temperatures.
Power SMB Header
Pin Definitions
Pin#
Definition
1
Clock
2
Data
3
PMBUS_Alert
4
Ground
5
+3.3V
Thunderbolt Header
This motherboard supports one Thunderbolt header (JTBT) on the back panel. A Thunderbolt
header is a hardware interface that allows peripherals to be connected to the motherboard
at transfer speeds of up to 10Gbit/s. This port combines a PCIe and a DisplayPort into one
serial signal.
SATA Ports
Six SATA 3.0 connectors, supported by the Intel Intel C422 PCH series PCH chipset, are
located on the motherboard. These SATA ports support RAID 0, 1, 5, and 10. SATA ports
provide serial-link signal connections, which are faster than the connections of Parallel ATA.
M.2 Connection
The motherboard contains two M.2 NGFF socket 3 connectors at J12 and J13. M.2 was
formerly Next Generation Form Factor (NGFF) and serves to replace mini PCI-E. M.2 allows
for a greater variety of card sizes, increased functionality, and spatial efficiency. The M.2
socket 3 supports 3.0 x4 (32 Gb/s) card in 2280 and 22110 form factors.
U.2 NVMe Connector
JNVME1 provides two ports for U.2 Non-volatile Memory Express (NVMe) solid state devices
(SSDs) for storage. U.2, formerly SFF-8639, uses high speed PCI-E for low data latency and
high performance. It requires an optional cable, CBL-SAST-0957, for each port.
