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Old Feb 18, 2012, 11:09 PM
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United States, CT, East Hartford
Joined May 2010
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Dell Poweredge 1855 1955 PSU AHF-2DC 2100W(12v 175A) Pinout

Dell Poweredge 1855 1955 PSU AHF-2DC 2100W (12v 175A) Pinout.
Works on 220-240v only.
Is compatible with US home type split-phase 220VAC but be cautious as to the correct wiring of the plug.

All of the important pins are included.

Connect PS On (A5) and PS Kill (B3) to ground to power up.

A5 = PS On
B3 = PS Kill
B2 = 12VS (voltage sense)
C2 = 12VLS (current share)
C4 = 12VS return (voltage sense return)
B4,B5,B6,C5,D5 = 5V
A4,A6,C6,D6 = Ground

Use these pins alone or in combination with one another
to increase 12v output voltage.

B2 to 5v via potentiometer = voltage increase
C4 to 5v via potentiometer = voltage increase
C2 to 5v = voltage increase

OVP = 14.1v
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Last edited by xandrios; Nov 09, 2012 at 08:44 AM.
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