Product manual

PCI Express to PMC adapter Copyright © 2011, Technobox, Inc
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Power Overview
PMC +12V and is sourced by the PCI Express edge finger connector.
PMC +5V is sourced by a DC/DC converter Q1.
PMC +3.3V is sourced by a DC/DC converter Q2, and not by the edge finger connector .
PMC -12V is sourced by a DC/DC converter U3.
Ground connections are present on all connectors but not shown.
Figure 16 Power supply architecture