Please Help Identify Mystery ISA Card

[Scarletdown]

I just recently purchased an old Toshiba T5200/100 Laptop at a thrift 
store.  One of the cards installed in it was an old 8-bit device of 
some sort.

First of all, here are pictures of the card in question.

http://webpages.charter.net/scarletdown/Geekworks/GW-Mystery-Card-0.JPG

http://webpages.charter.net/scarletdown/Geekworks/GW-Mystery-Card-1.JPG

Can anyone here help me identify what this card is, and more 
importantly, where I can download MS-DOS drivers for it?

It is from Maynard Electronics, 1988.  The large socketed chip says:

WD33C93A-PL
00-08 9031
069660200102
PROTO

Other markings state:  Type II Controller, and Rev. -5

The FCC ID number is D8I6I2 60201.

Just taking a wild guess, I suspect that this is some sort of SCSI 
Controller.  However, I could not find it in the TH99 archives.  The 
only match for Maynard on Driverguide is for a 16-Bit SCSI driver from 
Seagate.  Also, I could not find any info on Seagate's site either.

So, anyone here have any info on this card and possibly know where to 
get drivers for it?