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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.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoUSB 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.
Wiki User
∙ 14y agoEach USB controller hub (not individual port) can support up to 127 devices.
Wiki User
∙ 9y agoI usb port can support one device at a time. The support any device that hooks up to a usb chord and usb drives.
Wiki User
∙ 14y ago127
Wiki User
∙ 10y ago127 Devices
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How many peripheral devices can be connected to a single USB port?
On a typical setup, only one device can be connected to the ports. However, if you have a special USB port, or a device that will split a USB port, you can connect 2 or more devices.
What port connects up to 127 devices?
USB Will allow up to 127 devices per host controller. Usually, a host controller has more than one USB port. The host controller will only allow 127 devices in total (including hubs), so you can not have 127 per port.
What port has become the most popular way to connect devices to a computer?
A usb
What kind of port is used for high-speed multimedia devices such as digital camcorders?
You can use the FireWire port for high-speed multimedia devices.
What do USB and Firewire connections have in common?
both support hot-swapping devices
How many devices can usb ports support?
usb 2.0 can support 127 devices
Is a usb a portable device?
USB is a kind of communication port. Many portable devices have this port and can be connected this way to other devices.
How many devices can be connected to USB?
usb port driver, serial adapter,
Can you daisy chain USB hubs?
Yes. USB can support 127 devices per port which allows for daisy chaining.
Where does external devices are plugged?
in the usb port of your laptop/usb port of your cpu
How many peripheral devices can be connected to a single USB port?
On a typical setup, only one device can be connected to the ports. However, if you have a special USB port, or a device that will split a USB port, you can connect 2 or more devices.
How many devices can be cascaded on one USB 20 port?
127
How many devices does USB 3.0 support?
355
Does Windows XP support USB 2.0?
Yes. Your motherboard determine support for USB 3.0 . Your USB 3.0 devices can still be used in a USB 2.0 port but not with the upgraded speed. And USB 2.0 can be used in USB 3.0 port with it's original speed. Often USB 3.0 is marked with the color blue.
How many ports does the average usb port hub have?
In regards to the average usb port hub and how many ports are available, this can vary. The average usb port hub can support up to four usb inputs at a time.
Do all the serial port devices can be used in USB port?
no
How many devices does the serial port supports?
This question is too vague to give a specific answer to. Do you mean the old COM port of a PC? If so, this is an RS232 type port which is "point to point" - in other words you can only connect one device to it. There are many other serial interfacing technologies, some of which support many devices attached to one port - e.g. RS485 which is a multidrop bus and can have many devices connected to one pair of wires. Modern interfaces like USB are also serial in nature. USB can support up to 127 devices on a multilevel connection structure, but you can still only connect one pair of devices on a single wire. To attach more devices use a USB hub (or lots of them). Standard USB hubs spread one connection to either 4 or seven downstream ports.
