Processor upgrade

I am building a new desktop and I got a motherboard from an old computer and I have no idea what kind of socket it accepts so is there a way to find out?

I have no idea what brand the motherboard is.

Search the mobo with a magnifying glass for any wording that might relate to make or brand. There should be a name some where on it. Can you take some pictures and post them, we might know just by looking at the board.

Pslp - lr

I am pretty sure it is an Asus

Motherboard Specifications, P5LP-LE (Leonite) | HP® Support

Socket type: 775
Motherboard supports the following processor upgrades:

• Core 2 Duo E6x00
  
• Core 2 Duo E4x00
  
• Pentium D 9x0 Dual Core
  
• Pentium D 8xx Dual Core
  
• Pentium 4 6x1 series
  
• Celeron D 3xx series
  

Short of finding a used one or finding a site/store with old stock, not really worth building with as all the listed CPU's have long been discontinued.

I am sure it is lr

I found it Product Specifications | HP® Support