Cassie Wilderman download the service manual [https://www.dell.com/support/manuals/en-us/latitude-15-3500-laptop/latitude_3500_sm/working-on-your-computer?guid=guid-d3fdfd15-eedb-4a01-95f4-7f49429873a4|from here.] page 109 tells you exactly what to remove etc. It is “not” a separate keyboard but it is riveted to the bottom case and you pretty much remove everything around it so it is pretty involved.