The board is not isolated and all 4 channels share a common ground
All the power is supplied by via USB
The maximum output frequency is dependent on the speed of your system
The 1203 integrates a 20X2 White PhidgetTextLCD, and a PhidgetInterfaceKit 8/8/8
The PhidgetTextLCD allows you to display messages on a 2-line by 20-character LCD screen.