I have only 4.5V on the Nano's 5V pin when powered by USB

Hello,

Is it a normal situation or is there a broken component ?

wow, i was just about to post the same question !
except i'm only getting 4.2 V !!
i just read another thread that suggested possibly due to a cheap USB cable.

retronet_RIMBA1ZO:
i just read another thread that suggested possibly due to a cheap USB cable.

Strange. I'll check that.