@echbearsfan it is not quit clear which cover you are referring too. You can post some pictures of it with your QUESTION. That way we can see what you see and hopefully help you further. the other way would be to download the service manual for your computer from here Go through the parts list to find the HP Part number for that cover. With that do an online search and see what you find.
@echbearsfan post a picture of the cover that you are looking for with your QUESTION. That way we can see what you see Adding images to an existing question
The only listed Base enclosure for use with:
● Biscotti computer models with HDMI card reader, without modem 616485-001
● Matte black models with HDMI card reader, without modem 616489-001
● Charcoal models with HDMI card reader, without modem (for models 1.1 and 1.2 only) 616488-001
None of them seem to have the 5 hole pattern. see if you have an exact model number anywhere on your computer.
If nothing else I suggest that you contact HP directly to get the right part number.