you didnt say what OS you are using, but I had no problems with Win95, as soon as I tried Win98/W2Kpro it didnt detect mine....
After getting the latest Firmware (which I was a little worried about applying - but did it anyway), I had absolutely no problems...apart from finding that the software previous to version 4.01 of EZCD isnt any use with W2k pro
But, I bought it, and to be honest, it was money well spent, all works a charm now under W2K...
I'd suggest trying to find a firmware update, not sure what the ASPI layer thing is/does, but I got the latest one of those too, and as above, have no problems since