To summarize recent discussion...
There is NO UPGRADE to the mini Pro
Below are your current choices for Hi-Pros, extracted from >> Self-Programming-Help<<...
--Serial Hi-Pro - uses old serial cable, and separate power cord, and USB-Serial adapter with sufficient adapter-speed
--USB Hi-Pro (USB 1.1) hard to find, being flagged on EBay for trademark violation
--USB Hi-Pro2 (USB 2.0 = 5x faster than USB1.1) but way more expensive!
--USB >>mini Pro<< (USB 2.0 also fast, and cheap!)
If you get the USB Hi-Pro (USB 1.1) being presented as an upgrade to the mini Pro then your resale value will plummet to zero because you cannot list this for sale on EBay. It will be flagged and removed. Also, it is slower/USB 1.1! Thus it's a major downgrade from the mini Pro. Don't be fooled by this upgrade gimmick.