It might help to tell us more about exactly what this card
is, since Aztech is probably just a generic branding on a
card used by multiple relabelers. Not abbreviating terms
might help too, so we dont' have to try to decipher what "mm
pro 16 IIIs" means.
In general, one way to start looking is by the chipset the
card uses, you can find other brands with same and they may
have exact same design or at least similar enough to get the
info you need... but you didn't mention the info you need,
and sound cards are typically not needing any manual unless
you had a specific problem like trying to set jumpers.
The following page suggests HP is one OEM that used them,
and though their link to the manual doesnt work, it might be
that you can search HP's website to find it.
http://tekgems.com/Products/et-4889-snd-5064-2620.htm
Precisely. If I feel to need a manual it is mainly because of
the jumpers in this (triangular) card. The title of my post fully
identifies this well known sound card [Aztech is the manufacturer
brand, (AZT) 2320 is the (popular) model number, PnP indicates that it
is of the type "plug and play" (no legacy), and ISA refers to a now
obsolescent I/O bus standard for IBM-compatible PC motherboards but
also to the old, long (if they are for 16-bit buses as it is the case
here) and usually black slot sockets on motherboards]. "MM Pro 16IIIS/
SO PnP Sound Card v1.00" can be read after "Additional Information" in
the "README.TXT" file in the only disk which I got with the card, and
these terms are also identified in different Internet sites. This disk
contains drivers, and I have also found many drivers for this card in
Internet, but not a manual. The link you refer to was found soon, also
in other sites, but leading nowhere. Searches in the HP network and
other, including Aztech sites (where they declare not to be supporting
any of their sound cards any longer), did not give better results. I
said "desperately and unsuccessfully"... so far.