That's a recipe for persons killing Zeros as quick as they could plug the hubs in, which we do not propose.. or refund or exchange. The products description talked about opening the enclosure and cutting the 5V power through the USB line to power it with the DC jack https://johnnyrrnid.angelinsblog.com/27966919/adafruit-industries-usb-mini-hub-with-power-switch-an-overview