ID this card: MPPi Ltd

I found a rather old looking card. It appears to be an 8 bit ISA card (or at least has that size/style looking connector). The only writing on it is MPPi Ltd. There are no connectors on it, not even a case dust plate for filling a blank slot (so they must have planned on you leaving the slot cover in place when this was inserted, or it isn't an ISA card). There are 4 chip sockets on it, with the 2nd of the 4 containing an EPROM chip (M5L2764K). Remaining chips appear to be maybe support chips (SN74L series chips). There is a small bank of 4 dip switches, and two clusters of jumper poles (no jumpers installed, poles are labeled A thru G). Anyone have any clue what this card is? I'm wondering if maybe it is an early security dongle. Maybe this was done as an internal card rather than an external parallel or serial block. A pic of the card is at <http://www.mythtech.net/card.jpg> -chris <http://www.mythtech.net> w + p = -?