Velleman Extended Usb Interface Board 8 Analogue 10 bit resolution inputs: 05 or 10VDC / 20kohm 8 Analogue 8 bit resolution outputs: 05V or 10VDC / 47ohm 8 Digital inputs: open collector compatible (connection to GND=0) with on-board LED indication 8 Digital open collector outputs (max. 50V/100mA) with on-board LED indication One 10 bit PWM output: 0 to 100% open collector output (max 100mA / 40V) with on board LED indication.