Supermicro SuperServer SYS-211E-FRN13P User Manual page 70

SMA Voltage Level Selection
Use jumper JSEL1 to select the SMA1–SMA4 voltage level. Refer to the table below for
jumper settings.
Chapter 4: Motherboard Connections
SMA Voltage Level Selection
Jumper Settings
Jumper Setting Definition
Pins 1-2 3.3 V
Pins 2-3 5 V
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