No idea why no one else has mentioned: if the usb is horizontal, the side with the two open holes is 99% of the time the "up" side.
No need for USB logos or anything.
The cable has the “thick” part on the bottom, when you hold it with the USB symbol up.
The port is orientated “up” on the device (that is, the thick portion is on top), or orientated up with regards to the motherboard if it’s sideways. Most devices that accept USB provide these orientations.
It has a symbol printed on the side that's "up".
Re:Ever Plugged a USB in Wrong? (2019)
by pwinnski on Wednesday January 15, 2020 @11:29AM
(#22055610)
People keep saying this, but I have at least a half-dozen (admittedly cheap) USB cables with no symbol or logo printed on them at all.
Edit: Whoops, meant port.