National Instruments PCI-6602 timing and digital I/O card. Tested, fully functional, and in excellent physical condition.

(From manufacturer's website) The 6602 family devices are timing and digital I/O modules for use with PCI computers or PXI/CompactPCI computers. They offer eight 32-bit counter/timers and up to 32 lines of TTL/CMOS-compatible digital I/O. You can perform a wide variety of counter/timer tasks with the 6602 devices, including encoder position measurement, event counting, period measurement, pulse width measurement, pulse generation, pulse train generation and frequency measurement.