2007-01-09 04:39:13 · 5 answers · asked by PierreB 1 in Computers & Internet ➔ Hardware ➔ Add-ons
It's a USB port that provides power by routing it from the computers Mainboard. This means it is restricted to supporting low powered devices.
High powered USB devices would need a self powered USB hub.
2007-01-09 04:42:35 · answer #1 · answered by evilted_2 2 · 1⤊ 1⤋
Keith gave a pretty good answer but he did not explain it very clearly.
A computer powered USB bus does indeed provide all the power nessasary to supply any USB device.
What has happened however is that the USB platform has become tremendously popular so you may have more USB devices than you computer has inputs/outputs for, so you get a USB HUB with will give 4-8 more connectors. This is when the computers bus is unable to supply enough power for all of the devices. Therefore your HUB must have an external power supply to give the devices the power they need to operate.
If you think about a USB camera for example it does not plug into the wall for power, so it must be supplied by the hub.
I hope this is a comprehensive answer.
Peace
2007-01-09 04:58:05 · answer #2 · answered by Kdude 4 · 0⤊ 0⤋
A bus-powered hub is a hub that draws all its power from the host computer's USB interface. It does not need a separate power connection. However, many devices require more power than this method can provide ..
2007-01-09 04:47:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
If I understood your question correctly, it means the port is being powered by the voltage supplied by the motherboard.
This is important cause some USB devices will require more voltage to work correctly.
2007-01-09 04:50:35 · answer #4 · answered by Venom 5 · 0⤊ 0⤋
the one that takes you into town without any fuel sorry i had to ha ha
2007-01-09 04:43:18 · answer #5 · answered by Anonymous · 0⤊ 2⤋