Here is a link to the card to either add a second hard drive or primary, works great. Plug and Play…
I use one in my old Compaq. ORIGINAL XT-IDE Deluxe - Bootable ISA CF+IDE Interface Card https://www.ebay.com/itm/333219276603?hash=item4d956aa73b:g:WCwAAOSwkfReSzGv <https://www.ebay.com/itm/333219276603?hash=item4d956aa73b:g:WCwAAOSwkfReSzGv> There are several models. Bob
