Hi @Stux this is the TPUs with many adaptors to get it to OccuLink. It’s working well but as you say, the USB version would be much simpler if I had a free internal usb port.
Two chips on the green board are the CoralAI TPUs themselves, the chips on the blackboard splits a single PCIe lane in two, one for each chip. The sideways board at the top is the OccuLink to U.2 adaptor. Works perfectly.