How many devices can a usb port support?

Answer 1

In theory a single hub of USB can support 127 devices. In practice, this will not actually occur. Most computers do not have enough power to drive that many devices. A reasonable number would be about 20.

Answer 2

USB supports 127 devices through hub. But as all devices shares the same cable media, it's speed decreases as number of devices increases.

In general a USB interface on a computer (called a USB root hub) can recognize 255 devices. Unfortunately, those devices start sharing bandwidth and if the devices require much bandwidth you'll be severely limited to the speed at which each device can transfer data to and from the computer. For devices that use a large amount of data transfer, you may run into problems with as few as 3 or 4 devices on a single USB interface.

One device can be connected to a single USB port. However, a host controller can support 127 devices connected via USB simultaneously.

Answer 3

Each USB controller hub (not individual port) can support up to 127 devices.

Answer 4

I usb port can support one device at a time. The support any device that hooks up to a usb chord and usb drives.

Answer 5

127

Answer 6

127 Devices