Unfortunately, at the time this came out, Creative was allowing a lot of people to manufacture these cards and it's just a witch hunt. I'm pretty sure this was generically a Sound Blaster 128. If you have any other markings on the card it might help narrow it down but your best bet is to get on the internet archive and just find any drivers for the sound blaster 128 and install one, test it, uninstall it, and install the next one until you find the correct one. I always start with Creative's own drivers, then move on to Dell drivers. There are a few of these cards that you will end finding something that seems to work until you encounter some edge case the sound will be garbled. I have a whole stack of sound blaster live cards that I was never able to find the correct driver for. Note though, while Creative may have supported DOS emulation drivers, Dell and other 3rd parties did not. So you may find that there is no DOS driver for the card. I pray that's not the case but unfortunately, a lot of the $15 cards on ebay are only $15 because somebody already figured out it didn't support DOS. I pray this isn't the case for you and I wish I had a better answer. Hopefully, somebody is going to jump on here to tell me how wrong I am and screwed up I am and tell you exactly where the correct drivers are located.
Please though, if you find the correct one, upload it and clearly mark it for others, or put a comment on it in the internet archive.

It is Creative Ensoniq AudioPCI, have you tried these: https://www.vogonsdrivers.com/getfile.php?fil … 490&menustate=0 ?

These early Creative PCI cards can be a pain 🤣. Yes those drivers Ydee pointed to should work.
IIRC CT4810 with the CT2518 is a ES1373 variant identifiable with a blue color jack (as opposed to black).
You need EMM386 loaded to get it to work in DOS, something like Device=emm386.exe noems in config sys.
see also: https://www.dosdays.co.uk/topics/audiopci.php