Hello: Thanks for all of the responses. It looks like both the USB to Serial and PCI Serial port adapters work well with DXBase. I had a problem with my Rocketport ISA to 8 Port Serial card when trying to set up the Rotor function on DXB-2002. I tried changing the System I/O addresses but it still would not work. I finally put the 1000D on the Rocketport and the Rotor on one of the native serial ports and everything worked.
It soulds like the PCI version of Rocketport or the USB to Serial Multiport adapter will do what I need. 73, Mark

