This product update introduces new features added after the release of the GameCubePC kits.

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OCuLink Support

A custom pass-through board was designed and mounted to the rear cover plate to allow for an easily accessible OCuLink connection.

When used with an NVMe-to-SFF-8612 PCIe adapter (shown below) the motherboard can now interface with eGPU docks that support OCuLink, which offers even greater performance out of the mSTX motherboard.

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Intel NUC Support

A new bottom shell has been designed to work with the motherboard from an Intel NUC7i5BNK kit. These motherboards are more readily available and offer similar, if not better, performance than the mSTX builds. The rear I/O and cover plate were able to be merged into the bottom shell as one part, making assembly of these builds a much easier process.

The NUC does not have headers for additional system fans, so the fan hub board from the mSTX version was re-designed to include a speed controller. This breadboard prototype runs off of the NUC's USB power and the fans were changed to their 5V counterpart. Since the fans are only 3-wire, PWM control cannot be used as the on-board circuitry doesn't like to have its power switched on and off, even at high frequencies (20-30 kHz).

The fan speed is based on an NTC thermistor that constantly measures the ambient air inside the case, and uses a power op-amp circuit to output a proportional voltage and drive the fan. A minimum voltage of 2.5V is required to keep the fan alive so air is always circulating through the case.

Min Fan Speed (2.5V) for T < 25°C

Max Fan Speed (5.0V) for T > 35°C