Usb Rs232 Websites:
excitron.com
Excitron CNC Stepper Motors, rotary tables,encoders, robots
CNC Rotary tables, stepper motors, intelligent controllers, mechanisms, and robots. Direct from manufacturer.
byterunner.com
USB Serial Adapter, Audio, Extension Cable, VGA Video Splitter, PS2
Your source for computer connectivity devices: Serial Cards, Parallel Cards, USB and FireWire Cards, USB to Serial Port Adapters, USB to Audio Adapters, Video Splitters, USB to...