National Instruments PCI-6224 multifunction data acquisition card. Tested, fully functional, and in excellent physical condition. AI Channels 32 SE / 16 DI Sample Rate 250 kS/s Resolution 16 bits, 4 input ranges AO Channels none DIO Channels 24 Counters/Timers 2, 32 bits, 80 MHz For additional information and resources, use the model name to search the manufacturer's website.