Yes we have several of Sidehack's boards in hand and are working on a modified faceplate to support the Dell power supplies. They represent a huge cost savings over standard ATX supplies as surplus Dell PSU's cost about $12 compared to $200+ for an ATX Gold supply.

We also designed a custom GPU power adapter to wire these up. The Bitrocket GPU power adapter uses a single 2 conductor cable with 30 Amp quick connectors to simplify GPU wiring and eliminate the bulky PCIe power cables.