The USB-II16-OEM Series is an ideal solution for adding portable, easy-to-install isolated digital input capabilities to any computer with a USB port. The USB-II16-OEM Series is a USB 2.0 high-speed device, offering the highest speed available with the USB 2.0 bus. It is fully compatible with both USB 1.1 and USB 3.0 ports. The unit is plug-and-play allowing quick connect or disconnect whenever you need additional inputs on your USB port. The unit is one of the smallest of its kind for digital monitoring and control using USB. The board features your choice of factory configured 16, 8, or 4 optically isolated digital inputs. The isolated, non-polarized inputs may be driven by either DC sources of 3-31 V (or higher by special order) or AC sources at frequencies of 40 Hz to 10 kHz. Optically isolating the digital inputs from each other, and from the computer, assures smooth, error-free data transmission in noisy, real-world industrial environments. The input channels are available via on-board angled screw terminals for the lowest cost straight-forward connectivity solution. Alternative connections may be made from a 34-pin IDC type vertical header via ribbon cable to a remote screw terminal panel. The USB-II16-OEM series is excellent for use in applications where inputs must be isolated such as in test equipment, instrumentation, and process control. The board is designed to be used in rugged industrial environments, with extended temperature available. The board is PC/104 sized (3.550 x 3.775 inches, 90mm x 96mm) for added flexibility in embedded applications and is small enough to fit nicely onto any desk or testing station.