Hello.

I hope I'm in the right forum.
I have been searching for quite a while, before finding this site.
I frequently replace mainboards in the Latitude 5500, 5510 and 5520 models.
Changing the asset tag is pretty straight forward, but from what I've read changing the service tag isn't possible unless you can use a CH341A programmer and hex edit the bios.
Dell would probably be able to do it but sending them a used board and paying them defeats most of the cost savings over new.

While testing a used board and swapping parts, a 5510 just out of...