Google Answers Logo
View Question
Q: Dell computer Power supply ( Answered 5 out of 5 stars,   1 Comment )
Subject: Dell computer Power supply
Category: Computers
Asked by: gedyolf-ga
List Price: $2.00
Posted: 04 Apr 2003 09:04 PST
Expires: 04 May 2003 10:04 PDT
Question ID: 185999
What is and how functions the line +5fp on a dell power supply.
Subject: Re: Dell computer Power supply
Answered By: sgtcory-ga on 04 Apr 2003 11:01 PST
Rated:5 out of 5 stars
Hello gedyolf,

Great question!

The 'fp' in reference stands for 'flea power'. It is an alternative
wording in this instance, to describe the standby power. This
particular line you are asking about is the 5 volt positive supply for
the standby circuitry. When a computer goes into standby, it requires
much less power, and in most cases uses a different internal power
supply circuit sub-section.

Dell Support Technical Overview

The schematics above may not be for the particular power supply system
you are questioning, but this is a standard industry related term, and
the theory is universal. You will note that the +5VFP supplies much
less current than the main +5VDC supply.

+5VFP : 1.2 Amps
+5VDC :  22 Amps

Here is another reference that gives a vague definition
"When driving an easy load... working in flea-power range (under 1 W

In layman terms, 'flea power' represents a very small amount of power
:-) When you switch the Dell (or which every computer you are using
this in) into standby, the power supply swithes over to the +5VFP
circuitry to conserve power consumption, and put inactive components
in a quiescent state. Even if the computer is off, but still plugged
in, this flea power is supplied to the CPU in most instances. You can
read more about this at the following link:

Tech Archives
"Otherwise, the PC utilizes "flea power," or about 2.3 watts, to

To assist with this answer I searched Google for:

vfp volts

Should you need any clarification, please ask before rating this
answer. I would love to help as much as possible.

Thanks for the question,
gedyolf-ga rated this answer:5 out of 5 stars

Subject: Re: Dell computer Power supply
From: feilong-ga on 04 Apr 2003 13:18 PST
Great answer Sgtcory! :-)

Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  

Google Home - Answers FAQ - Terms of Service - Privacy Policy