Frequently Asked Questions on USB (Universal Serial Bus)

High Quality USB 3.0 Cable Standard A Male to Micro B Male Cable

What is USB?
USB is a easy way to connect peripherals to your computer.It can be used for a wide range of devices such as scanners, cameras, keyboards, speakers – almost anything to your computer.

What is USB good for?
USB is great for attaching medium speed devices to computers. It’s maximum speed of 12 Mbps is not good for low speed devices like keyboards, mice, or joysticks.but is also suit for medium speed devices like floppy drives, cameras, modems, or scanners.Furthermore,Build in “hot-pluggable” that allows you plug devices in or unplug them safely when you computer is turned on.Using either multiple ports on your computer or a hub, you can attach an almost unlimited number of devices – theoretically up to 128 if you have them.

What isn’t USB good for?
USB isn’t a replacement for every connector on your old PC. It’s maximum speed of 12 Mbps isn’t fast enough for high speed networking, digital video, fast disks, and other high performance peripherals. Other solutions such as SCSI or Firewire/iLink can fill these needs.Also, many older peripherals do not have USB built in. For these, there are a variety of USB adapters available.

Can my computer use USB devices?
This decide in two things: hardware and software.Hardware-wise,you need to get a USB port on your can either be built in (most PC’s build in 1999 and Apple’s iMac) or from a plug in card. A number of venders sell PCI and CardBus USB adapters which can add USB capabilities to your older computer.Software-wise for Wintel computers, you need either Windows 98, Windows 95 OSR 2.1 (although Windows 98 has better USB support than Windows 95), Windows 2000. For Apple Macintosh computers you need MacOS 8.1 or later.

What is the difference between USB 2.0 and 3.0?
The maximum transfer rate for USB 2.0 is 480 Mbps, also referred to as High Speed. USB 3.0 has a transfer rate over 10x faster with a top speed of 5.0 Gbps. brbrTo take advantage of the additional speed, you will need a host controller, cables and devices that are all USB 3.0 compliant. The actual transfer rate will depend on the equipment being used.

Is USB 3.0 backward compatible with prior versions of USB?
Answer: Yes, it is. However, maximum transfer rates will be limited to the maximum performance of the slowest device or cable in your connection.

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Andrew Lu - Marketing Manager - Shopper+ Networks Canada

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