I have no idea what LP stands for, but I do have a 75GXP - 15GB. A real nice drive, quiet and fast; running on an integrated Highpoint controller at ATA-100. Before you buy, consider that IBM will honor the warranty only if bought from an authorized retail reseller. If you buy OEM, the warranty will only be as good as the dealer provides. I believe that you can find the list of authorized resellers at the IBM site. As I recall, Outpost is authorized and sells them at a fair price when you consider that there is no shipping charge and overnight delivery.