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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.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoUSB Ports technically can run up to 127 devices. That is a technical limitation. However it is unlikely you'll be able to good service and performance with that many off one port.
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How many devices can a usb port support?
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.
A USB device has exceeded the power limits of its hub port?
Sometimes USB devices will display a warning that they have exceeded the power limits of the hub port. This means that the port cannot keep up with the power demands of the device. To fix the problem, either switch ports, or connect the device to an outlet cord.
What connectors are used on a parallel port cable?
Many devices have traditionally been connected to a parallel port. The most common usage was for printers. Image scanners, external hard drives, and Ethernet adapters have also been created for the parallel port.
How many devices can you plug into a serial port?
2:DTE - Data Terminal Equipment - terminalDCE - Data Communication Equipment - modemMost applications of RS-232 break this standard and have different devices connected to the 2 ends, semi-emulating DTEs & DCEs. This semi-emulation usually causes some kind of compatibility problems.
Which devices can be daisy chained?
Often times, external monitors/extra monitors are daisy-chained. Some computers will have a setup where, say, three cables go directly out of the computer into three seperate monitors, but sometimes one cable goes out from the computer to the monitor, which is linked up (daisy chain) to other monitors.
What is the benefits of a USB?
it can hook up to 127 devices and the speed is faster than any other port on the computer
What type of port allows up to 127 hardware devices to be connected to the computer host?
The USB interface is designed to handle up to 127 devices at up to 480 Mbps. Realistically anything more than about 2 dozen devices will usually result various odd behaviors.
Which connecton type supports upto 127 peripherals in a single connections?
Theoretically, you can use a USB port to connect up to 127 devices. To do so, you would need to use hubs. The problem with using hubs is that they count as devices. Thus if a hub has 4 sockets, it counts as 5 of the 127 devices.
How many devices can a usb port support?
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.
Which ports transmit data to up to 127 devices in a daisy chain?
USB ports transmit data to up ti 127 devices in a daisy chain.
What maximum number of USB devices can be connected to a PC?
This depends on if you use the other ports on your computer to connect devices to also. If you only use the USB port and connect it to USB hub's you can connect up to 126 devices. Without using any USB hubs you will be limited to only one USB device.
How many devices can a IEEE 1394 port support?
firewire port can support up to 63 devices on one firewire port with a hub
A serial port can hook up devices such as external modems and label printers What is this port usually called?
COM
How many devices can be daisy chained from one usb?
A personal computer external bus standard which can support up to 127 peripheral devices in a daisy chain configuration, can support plug-and-play (hot plugging), and has a total bandwidth of 1.5 megabytes per second. what are these devices?
Why are the port lines of programmable port devices automatically put in the input mode when the device is first powered up or reset?
It is put that way for you to set up your computers. The makers of the computers thought it would be easier for owners of the computers when the port lines of programmable port devices were automatically put in the input mode when the device is first powered up or reset.
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.
Which can connect up to 127 different peripherals simultaneously with a single connector?
Universal Serial Bus [USB]
