Digilent MCC USB-CTR08 Data Acquisition, 8 Channel(s), USB, 4Msps, 64 bits

The Digilent USB-CTR series are high-speed counter/timer devices and feature up to eight counter inputs, 48 MHz input frequency, up to 64-bit resolution, up to 8 MB/s scan rates, multiple counter modes, four pulse-width modulation (PWM) timers, and eight digital I/O.

High-speed pulse counter for general counting applications
Software-selectable resolution up to 64-bits
Aggregate scan rate of 8 MB/s
Synchronous high-speed reads of digital and counter inputs