I am considering opening up the supplied metal case for the Allo USBridge to remove jumper J28 and allow the USBridge to be powered down separately from the Sparky. On the other hand, there are buttons on the case labelled RST and PWR, but I cannot find anything that tells me what they do. I am looking for a simpler way of shutting down the USBridge (and more importantly the linear power supply feeding it) without having to issue a shutdown command to DietPi. Thanks.