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USB 2.0 Questions & Answers
What Are The Benefits Of The USB Interfaces?
- Cross-platform: Use your USB peripherals on both Mac and Windows platforms.
- “Hot Swappable”: No need to shut down or restart your computer when adding or removing a USB device. Plug it in and its ready.
- Automatic configuration: Once your device is connected, your computer recognizes the device and automatically configures the necessary software.
- Daisy-Chaining: with USB ports on your computer, you can connect up to 127 peripherals using hubs.
- Easy Installation: One standardized port and plug combination makes it simple to connect.
What Are The Ideal Uses For USB 1.0?
USB 1.0 is perfect for more traditional connections such as keyboards, mice, joysticks and scanners. These types of devices don’t require fast data transfer rates, and operate very successfully at the slower speeds.
What Are The Ideal Applications For Hi-Speed USB 2.0?
Digital cameras, CD/DVD drives, hard drives and scanners will all benefit from the added bandwidth and performance gains of the new implementation of the USB standard. Hi-Speed USB 2.0 provides the necessary fast data transfer rates that today’s devices require, and combines the earlier specifications so older devices that operated under the original USB standards will still work with Hi-Speed USB 2.0.
Will USB 1.0 Devices Run Faster When Connected To A Hi-Speed USB 2.0 Bus?
Unfortunately, no. USB devices will still operate at 12Mb/s at full-speed and 1.5Mb/s at low-speed on a Hi-Speed USB 2.0 bus. Even though USB 1.0 devices won’t run any faster, they can work alongside Hi-Speed USB 2.0 devices on the same bus. However, if you plug in a Hi-Speed USB 2.0 device to a USB 1.0 bus, the speed of the Hi-Speed USB 2.0 device will decrease to 12Mb/s.
What Is A USB Hub?
Technically, you can connect up to 127 devices to a single USB bus. For more than two devices, though, you must make new connections using a peripheral called a “hub.” A hub, which you hook up directly to a USB connector on your computer, usually has 4 or 7 output connections enabling you to connect the same number of peripherals. Some hubs have no power supply and others are self-powered. When you choose a hub, opt for the self-powered variety, as they have their own AC adapter. The most powerful hubs provide 0.5A of power to each port.
Will Hi-Speed USB 2.0 Devices Work On USB 1.1 Hubs And Vice Versa?
You can use your Hi-Speed USB 2.0 devices with USB 1.1 hubs, but the peripherals will be limited to USB 1.1 performance levels. Hi-Speed USB 2.0 is backwards compatible, so you will be able to connect USB devices to Hi-Speed USB 2.0 hubs; however, the USB devices will still maintain their normal performance levels (i.e. 12 Mb/s).In order to achieve the fast data transfer rates of Hi-Speed USB 2.0, you must connect your Hi-Speed USB 2.0 device directly to a Hi-Speed USB 2.0 port on either a computer or hub.