Pyramid usb midi issues

Hi all. I’m having issues with usb midi. I bought this powered usb midi [hub](Powered USB Hub, atolla 4-Port… and this [adapter](Mini USB OTG Cable for Digital… to fit the pyramid but it doesn’t even power the pyramid. Could the adapter be wrong? Or do I have the wrong type of device? I’m trying to send midi to an op1. Thanks.

I’m not familiar with the OTG Cables, sorry. I have no idea why it wouldn’t be sending power when the Amazon description/answers indicates it should pass power.

However, even if it passes power, can the OP1 work as a USB Host?
If not, what are you using as USB Host?

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