The DMC20x0 USB Optima controllers have been tested now and they work fine.
And a word on the Galil Tools drivers...
Galil Tools and the drivers provided therein do not work with the Mach Galil Plugin. However, Galil Tools and Smart Term v7 drivers can coexist on the same machine and run Ethernet based controllers. Since the means of communicating with the Ethernet controllers is the same, both packages will function. The Galil Tools package installs a different driver for the bus based PCI controllers, along with a different API. So if you are running a PCI controller, don't install the Galil Tools along with the Smart Term v7 stuff.
Steve