Instruction Manual
400 Watt 20/24-pin Silent ATX 2.01 Computer Power Supply
ATX2POW400HS
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
Packaging Contents
• 1x 400W ATX Power Supply
• 1x Power Cord (NA)
• 1x Instruction Manual
Installation
NOTE: Computers contain sensitive electronic components that
are easily damaged by static electricity and excessive shock. When
handling the power supply and other components, ensure you are
properly grounded using an anti-static mat or similar device. If anti-
static equipment is not available, ground yourself by touching the
exterior of the computer case or another large metal surface before
handling any peripherals.
*actual product may vary from photos
1. Installation of a power supply requires some mechanical skill
and requires that you open your computer case to disconnect
and reconnect wires. If you are unfamiliar with this kind of work,
consider bringing your computer and new StarTech.com power
supply to your local computer store for help.
2. Check the red switch on the rear of the power supply, next to
the power cord plug. Be sure it is set to the correct voltage for
your country. In North America, it should read“115”. In Europe
and Australia it should read“230”. To change the switch, use
a screwdriver in the notch of the switch and slide it to the
opposite side. If you are unsure of the voltage used in your
country, contact your electricity provider before proceeding.
3. If you are replacing an old power supply in your computer,
ensure the computer is shut down and disconnect the power
cord from the back of the old supply.
4. Open your computer case. In most designs, the case is opened
by removing two or three screws at the rear of the case and then
sliding the covering panel backward until it comes free. If your
case is a tower style, ensure that you remove the panel that will
expose the top of the computer’s motherboard. This is generally
the left-side panel. There are many different case designs,
however, so if you are unsure of how to open your particular
case, consult the user manual for your case or contact your local
computer store for help.
5. With the computer case open, review the connectors being used
from your old power supply. If you are building a new computer,
review the connectors that you will need to use. Check the type
of connector on your motherboard and use either the 24 or 20
pin ATX power connector on the power supply as appropriate.
6. Disconnect the old power supply connections from inside
your computer. Hard disk drive, CD drive and floppy disk
drive connectors disconnect by pulling on the connector. The
motherboard connector(s) have a clip that must be pressed
while pulling on the connector to release them. A rocking
motion while pulling will aid in getting the connectors loose.
Never pull on the wires of a connector to unplug it.
7. Check that all the wires from your old power supply are free.
Remove the four screws on the rear of your old power supply to
free it from the computer case. Support the power supply with
one hand if it could fall while removing the last screw. (Such as in
a tower style case.) Remove the power supply by sliding it back
and then out through the side of your case.
8. Install your new power supply by positioning it through the
side or top of your case (depending on your case style) and then
back onto the power supply mounts. Check that the orientation
with the screw holes in your case is correct; all four holes must
be aligned. Support the power supply with one hand while
threading a mounting screw through the back of the case and
Manual Revision: 07/05/2013
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