What did dude think was coming out of the VGA port? Tiny photographs? It’s all electricity through wires, of course it’ll send some electricity into a phone
With USB power delivery, you can get 9V, 12V or higher over USB. Usually the device requests higher voltage from a PD charger, but it’s not impossible for a modern device to be able to cope with just having 12V shoved into it.
I don’t know shit about cables but it’s plugged into a monitor. My intuition is that a monitor shouldn’t be pushing power out through a video input port.
DisplayPort has a +3.3V 500mA pin specifically for pushing power. In theory, great for powering an active adapter. In practice, has killed motherboards because Dell can’t design a computer for shit.
Friendly reminder that if you use a Dell charger on a HP, nothing happens but vice versa, you damage the motherboard. It kills a chip used for charging. Dell used the same size barrel jack, but they wired it differently from everyone.
What did dude think was coming out of the VGA port? Tiny photographs? It’s all electricity through wires, of course it’ll send some electricity into a phone
Yeah but is the voltage correct? It should be 5V to charge a phone over USB, is that part of the VGA spec?
With USB power delivery, you can get 9V, 12V or higher over USB. Usually the device requests higher voltage from a PD charger, but it’s not impossible for a modern device to be able to cope with just having 12V shoved into it.
The USB device would have been made wrong if it just shoved 12V down the power lines without negotiating it.
Of course electricity comes out of a VGA port, but it’s only a signal, I wouldn’t assume that it’s anywhere near enough to charge a phone.
Pin #9 of the VGA spec is 5v, though it seems unusual that a monitor would provide power on that pin
It’s sending out the pixels, silly! A stream of little pixels in neat little rows.
I don’t know shit about cables but it’s plugged into a monitor. My intuition is that a monitor shouldn’t be pushing power out through a video input port.
DisplayPort has a +3.3V 500mA pin specifically for pushing power. In theory, great for powering an active adapter. In practice, has killed motherboards because Dell can’t design a computer for shit.
Friendly reminder that if you use a Dell charger on a HP, nothing happens but vice versa, you damage the motherboard. It kills a chip used for charging. Dell used the same size barrel jack, but they wired it differently from everyone.
Signals aren’t magic, they consist of electrical power. You can get at least a little bit of power from anything that isn’t an optical port.
You cannot charge a phone off “a little bit of power”.