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SATA Ports and M.2
The A2SDi-8C/8C+/12C/16C-HLN4F has twelve SATA3.0 ports (4 via ports and 8 via two
miniSAS HD header).
The A2SDi-2C/4C-HLN4F supports up to eight SATA3.0 ports (4 via ports and 4 via miniSAS
HD header). Using the Flexible I/O feature, a user can select a total of eight SATA ports and/
or PCIE lanes on the expansion slot.
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
will be turned on. Press the UID switch again to turn off 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
supermicro.com.
Pin Definitions
Pin#
1
2
3
4
UID Switch
Definition
Ground
Ground
Button In
Button In
41
Chapter 4: Motherboard Connections
UID LED
Pin Definitions
Color
Status
Blue: On
Unit Identified
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