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Chapter 3 Motherboard Connections
SATA Ports
The A2SDi-4C-HLN4F/A2SDi-8C-HLN4F has twelve SATA 3.0 ports that are supported by
the Intel Atom SoC chipset. I-SATA0 has built-in power pins to support Supermicro's SATA
DOM (Disk On Module) solutions. I-SATA ports 4-11 are available via miniSAS. JMD1 is an
M.2 PCI-E 3.0 x2 slot that is muxed with I-SATA.
Unit Identifier Switch/UID LED Indicator
A Unit Identifier (UID) switch and an LED Indicator are located on the motherboard. The UID
switch is located at UID, which is next to the VGA port on the back panel. The UID LED
(UIDLED1) is located next to the UID switch. When you press the UID switch, the UID LED
activates. Press the UID switch again to deactivate the LED indicator. The UID Indicator
provides easy identification of a system unit that may be in need of service.
Note:
UID can also be triggered via IPMI on the motherboard. For more information on IPMI,
please refer to the IPMI User's Guide posted on our website at
http://www.supermicro.com
.
UID Switch
Pin Definitions
Pin#
Definition
1
Ground
2
Ground
3
Button In
4
Button In
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
