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There aren't many disadvantages to USB; it has been a very successful technology - this can be seen by the many applications it has been applied to.

The limitations are largely because of the applications. It has a limitation of signaling length of 5 meters; although with hubs, this can increased to 30m, this is clearly a cumbersome solution.

The original USB specification operated at low speeds (1.5Mbps), USB 2.0 addresses that by increasing that to 480Mbps. USB 3.0 has demonstrated 4.8Gbps.

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14y ago
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15y ago

Pros: Easy to carry, easy to use. Requires no external or internal power. The USB voltage from the computer supplies the power. Reasonbly inexpensive. Cons: Easy to loose, slow access times, (for streaming video) minimal storage. Breakable but mostly pretty durable. Hitting it may damage USB connector. May fall in to the wrong hands. Can be corrupted if disconnected incorrectly or dropped. Overall, a good investment to transfer small files from one computer to another. Most USB sticks are plug and play. They can also be used as a security key for hi-end software applications, and other access limitations.

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14y ago

Disadvantages are that they can sustain limited number of write and erase cycles before failure. Mid-range pen drives under normal conditions will support several hundred thousand cycles, although write operations will gradually slow as the device ages. Most USB pen drives do not include a write-protect mechanism. Write-protection makes a device suitable for repairing virus contaminated host computers without risk of infecting the USB flash drive itself. A drawback to the small size is that they are easily misplaced or lost. This is a particular problem if the data they contain are sensitive. It is for this reason that pen drives are now coming attached to key chains, necklaces and lanyards. They have limited capacity when compared to disk drives even in 2.5inch form factors. They get damaged or data is corrupted by severe physical impacts. Improperly wired USB ports can also destroy the circuitry of pen drives. Pen drives are costly.

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14y ago

USB has much slower data transfer rates than firewire, SATA or PATA interfaces. USB 2.0 has much higher speeds than USB 1.1, but due to compatibilty reasons many people end up inadvertantly running in a lower-speed compatibility mode.

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9y ago

One disadvantage of having a USB is the fact that it can be lost. Another disadvantage is the fact that UBSs can malfunction.

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11y ago

When using Line6 Monkey to update a product usb hubs can cause a software update to fail

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Q: What are the disadvantages of a USB hub?
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