i need to buy a power supply for my compaq 4403us. tried to go to hp. got nowhere! what do i need to know to buy one? all i have is the model number.

I would open up your computer and write down the wattage of the power supply currently in there. Then go to compusa or a similar computer store and buy an equivalent powers supply. -Ryan Adams http://members.cox.net/rtadams89/

that all i need to know? the wattage

i went online and found this out about the compaq computer:Power Supply--Steady-state 200 watts. so i just go to a store and say gimmie a 200 watt power supply? is it really that E-Z?

"is it really that E-Z?" NO. Not in this case. Your power supply is in a proprietary sized case - it is not in a standard ATX PS/2 sized case - it is in a smaller case. The wiring of the main connector to the mboard is exactly the same as a standard ATX PS, except position 18 has no wire, which probably doesn't matter and a standard wired ATX PS could be connected, but a standard sized PS case will not fit in your computer case, unless you are prepared to modify your computer case, and even then it may not fit inside the case. If you don't want to have to fiddle with your computer case, you have to get a new PS that is in the same size of case, Dimensions 125L x 100W x 63.5H mm or Dimensions US 4.9" x 3.9" x 2.5" or you have to get yourself a generic computer case a standard sized PS will fit in. The latter is not advisable because I was unable to determine which mboard you have, HP uses a one piece connector for the power switch and led's, and without knowing which mboard you have I can't tell you how to connect the power switch, hd and power led's, or the case speaker if applicable. What you need to do is to go to the web site of a power supply manufacturer that has listings for replacements for propritary PSs - for HP Pavilion 4403 or the HP part number of the PS, or search the web for either of those to find a new or used PS. E.g. This a site has a direct replacement in the proper sized case: http://www.power-on.com/matx145.html ......... "...tried to go to hp. got nowhere!" There is no Pavilion 4403US model listed on the HP site, but there are several Pavilion 4403 models - some desktops, some laptops. However, I checked and there is no PS listed for any of the desktop models at the parts lookup page: http://partsurfer.hp.com/cgi-bin/sp... The desktop model I looked at has a K6-2 333mhz cpu, and a 200 watt PS is enough for a system that has that. FYI. It has a SiS 5598 chipset - it can't actually achieve a 100mhz front side bus speed - it's actually running at about 90mhz when you set it to 100mhz. That was a common scam back then.

HP cross reference, where I determined which PS is a direct replacement: http://www.power-on.com/hp.html

Hey Tubesandwires, Thanks for the info. I check that web site from Response Number 5 and I couldn't find the power supply. It's a Compaq Presario 4403us not a Pavilion. I hope the power supply still is the same? Have you dealt with that company "Power On" before? Is it safe? Once again, Thanks!