I used to have one years ago. It has no RAM expansion (without finding the special add-on card). It's also PIO.
All the Trumpcard 500 Professionals that I used had the 4MB RAM expansion installed. I never measured the drive speed back in those days. It seemed fast enough so I never worried about it.
If I had cared about drive speed back then (which I did) then I would have bought an A3000 (which I did)
A3000 has a fast and beautiful and smoooth SCSI controller which was massively superior to the Trumpcard Professional in my A2000/9MB/68000 machine and much faster than the IDE controller in my A4000/18MB/040.
