USB energy issue with RCPII

Some time ago a friend of mine has been complaining that when recording with the RCPII in several applications at the same time on his Mac, a metallic, electrical, interference sound appears in the recording.

The same thing happens to me when I try to use an Android phone to do Lives on TikTok or Twitter Spaces. But a few days ago something very strange happened to me. RØDE is aware of this and they promised me a solution that has not arrived. They haven't updated the firmware in over 3 months.

I was doing a several hours Live on TikTok with my iPhone 13 Pro Max, using the SC-19 cable through the USB2 port of the RCPII. When I finished the Live, I unplugged the phone, and it turned off. I still had 25% battery so that seemed weird to me.

Today I did a test. With the RCPII powered off but connected to power, I plugged my iPhone into the SC-19 on the USB2 port and nothing happened. But I switched the SC-19 to the USB1 port of the RCPII, and the phone turned off.

I don't know if it's a protection for the iPhone against high voltages, but this is already worrying me. I usually have my Mac Mini connected to USB1 of the RCPII. And on several occasions he came home to find my Mac Mini turned off as well.

I'm thinking it's the RCPII and its USB ports. Another friend assures me that with the RCPII off, his motherboard is receiving power (the LEDs light up). And the saddest thing is that RØDE knows about this, but again, there is no solution at the moment. Read this