|Did you look at your motherboard to see if you have a matching slot? |
ISA slots were phased out on most board probably 15 years ago. If memory serves me correctly you could use an 8 bit card in a 16 bit slot. I doubt that you have either but who knows.
Look at the link below for help with identifying the slots on your board.
If you don't mind my asking, why do you want to use that old tape drive. Probably too little capacity to be of much use.