CommentStreams:0b847ffae986aae4d00bde57e2b15bd0

I've ordered UPS 3 from aliexpress u-geek workshop store.

In the package I've received the UPS 3 and a small plastic bag with two PH 2.0 2-PIN cables and two very small radiators(these are not for raspberryPI as they are very small and it's almost the size of the microchips on the ups 3 hat)

Besides that I have one more question. Sometimes the board makes some coil whining noise, is this normal?