1) Compaq Presario SR1130NX > HP Support > Main page,http://h10025.www1.hp.com/ewfrf/wc/product?product=425917&lc=en&cc=us&dlc=en&submit.y=8&submit.x=5&lang=en&cc=us
In the list go to the right, and click on > Manuals
On the Manuals page;
1) Quick Setup Poster 2 is a diagram of how to connect the computer up.
2) Getting Started Guide is essentially a User Manual
3) Compaq Presario Desktop Products - Upgrading and Servicing Guide;
Describes how to;
A) Open the computer case
B) Replace a Harddrive, or Optical Drive
C) Removing and replacing Ram Memory
D) Adding Add-In Cards in an expansion slot
E) Replacing the CMOS Battery. (CR2032)
4) Part Replacement Guide;
Describes how to;
A) Replace an Optical Drive
B) Replace a Harddrive
C) Replace an Expansion Card (Add-In Card)
D) Replace a Diskette Drive (Floppy Disk Drive)
E) Replace the Power Supply
F) Replace the RAID Controller Card
G) Replace the 6-in-1 Memory Card Reader
Back in the Main menu clicking on Product information > Product specifications > Product Specifications, details out the Compaq Presario SR1130NX specifications.
Clicking on Product information > Product specifications > Motherboard Specifications, A7V8X-LA (Kelut)
details out the motherboard specifications, and at the bottom shows a motherboard illustration and photo.http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00069442&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=425917&lang=en
The Processor socket is a Socket A. Also known as a Socket 462,http://en.wikipedia.org/wiki/Socket_A
Processor's, and maximum processors supported, are shown in the specifications.
The motherboard chipset is a VIA KM400A, and VIA VT8237
(Northbridge chip = VIA KM400A. Southbridge chip = VIA VT8237)http://en.wikipedia.org/wiki/List_of_VIA_chipsets#Slot_A_and_Socket_A
Ram Memory supported is DDR Sdram at either 266MegaHertz, or 333MHz
PC2100 and PC2700 respectively.
2GB Maximum TOTAL Amount
2 ram memory slots.
EACH slot has a Maximum Amount of 1GB.
The graphics expansion slot is an AGP.
(Accelerated Graphics Port)
Uses AGP 8X graphics cards.
Power Supply uses is an ATX form factor.
Approximately 6 inches Wide, 5-1/2 inches Long, and 3-1/2 inches Tall.
Guessing here but it's either a 250 Watt unit, or 300 Watt unit.
Probably made by Bestec, or Delta, or HiPro.
If the above is not what you had in mind, please post back in a Comment.