Nice, there are some settings you can change in the CSPPC boot menu, I can't recall what ones _ I have to check my old thread but if these are true UW adapters maybe you can achieve up to 30mb/sec with the right settings 
See my Video here:
http://www.youtube.com/watch?v=6zlZfFFVytQ (test at 3min 30sec)
I get speeds between 20mb-30mb/sec from ACard UW/SCSI- IDE HDD in the different tests
I will find the settings and report back
---------- Post added at 12:17 ---------- Previous post was at 12:05 ----------
Hi!
This post has some useful information, SCSI settings can be found in post #18
Have fun!
See my Video here:
http://www.youtube.com/watch?v=6zlZfFFVytQ (test at 3min 30sec)
I get speeds between 20mb-30mb/sec from ACard UW/SCSI- IDE HDD in the different tests
I will find the settings and report back
---------- Post added at 12:17 ---------- Previous post was at 12:05 ----------
Hi!
This post has some useful information, SCSI settings can be found in post #18
Have fun!