Check the listing for details. NI National Instruments USB-6351 Data Acquisition X-Series Multifunction DAQ. Condition: Used. Listed at 1750.00 USD. NI National Instruments USB-6351 Data Acquisition X-Series Multifunction DAQ 16 AI (16-Bit, 1.25 MS/s), 2 AO (2.86 MS/s), 24 DIO USB Multifunction I/O Device - The USB‑6351 offers analog I/O, digital I/O, and four 32‑bit counters/timers for PWM, encoder, frequency, event counting, and more. Onboard NI‑STC3 timing and synchronization technology delivers advanced timing functionality, including independent analog and digital timing engines and retriggerable measurement tasks. The USB‑6351 is well suited for a broad range of applications, from basic data logging to control and test automation. The included NI‑DAQmx driver and configuration utility simplify configuration and measurements. Comes with the USB-6351, the matching power supply and matching USB Cable. Item is guaranteed to be in working condition.