I had a Mtec-020i. It doesn't work with DMA hard drive controllers such as the A590/A2091 without a patch.
Supra 28 is just a fast 68000 and really won't give you the speed boost that an 020 or 030 would be.
AdIDE isn't an accellerator. The ICD AdSpeed is and is just a faster 68000 like the Supra.
