I can't provide direct download links, but you can easily obtain EzCad2.5.3 from the following sources:
Official Manufacturer's Website: The safest way to download EzCad2.5.3 is from the official website of the laser equipment manufacturer or the official software distributor. They typically provide the latest software versions along with driver support.
Laser Equipment Providers: If you purchased a laser machine that uses EzCad2.5.3, the manufacturer or supplier may offer the software as part of their product package. You may also find download links through the product support pages.
Authorized Resellers: Some authorized resellers or distributors of laser equipment provide software downloads as part of their support services.
Make sure to download the software from a trusted source to avoid any security risks associated with unofficial downloads.