Sundance SMT166 - Manual (Page 15)

4.2.1.8 Power supply
The board can be powered using just the 24-pin ATX connector. Alternatively, the
whole board can be powered using just the +12V input pins on the secondary 4-pin
connector and/or the +12V pins on the 24-pin connector. This is a build-time
option.
Figure 5 - ATX Power connectors.
This is the only power supply to the board. All other power rails going to all 5 sites
as well as all the components mentioned in this document are derived from the
+12V rail.
The 4-pin socket adjacent to the 24-pin ATX connector (if fitted) should only be
used to power fans and other peripherals. It should not be used for connection to
an ATX 12V power source.
Product Specification SMT166 Page 15 of 44 Last Edited: 17/06/2014 16:12:00