USB 3.0 – SuperSpeed USB
27 Mac 2011 Tinggalkan komen
Have you spent too much time waiting for large files to crawl between a computer and an external hard drive? Don’t worry,be happy becoz USB 3.0 has arrived. Not only can it move data faster and provide more power, but it’s compatible with USB 2.0 devices.
USB continues to be the answer to connectivity for PC, Consumer Electronics, and Mobile architectures. It is a fast, bidirectional, low-cost, dynamically attachable interface that is consistent with the requirements of the PC platforms of today and tomorrow.
SuperSpeed USB brings significant performance enhancements to the ubiquitous USB standard, while remaining compatible with the billions of USB enabled devices currently deployed in the market. SuperSpeed USB will deliver 10x the data transfer rate of Hi-Speed USB, as well as improved power efficiency.
- SuperSpeed USB has a 5 Gbps signaling rate offering 10x performance increase over Hi-Speed USB.
- SuperSpeed USB is a Sync-N-Go technology that minimizes user wait-time.
- SuperSpeed USB will provide Optimized Power Efficiency. No device polling and lower active and idle power requirements.
- SuperSpeed USB is backwards compatible with USB 2.0. Devices interoperate with USB 2.0 platforms. Hosts support USB 2.0 legacy devices.
What’s new in USB 3.0?
Unlike the change from USB 1.0 to USB 2.0, USB 3.0 brings actual physical differences to the connectors. The flat USB Type A plug (that goes into the computer) looks the same, but inside is an extra set of connectors; the edge of the plug is colored blue to indicate that it’s USB 3.0.
On the other end of the cable, the Type B plug (that goes into the USB device) actually looks different — it has an extra set of connectors, so it looks a bit like a USB plug that’s been crimped a little ways down one end. There’s also a new Micro Type B plug that has all its connectors laid out horizontally.
As a result, you won’t be able to fit a USB 3.0 cable into a USB 2.0 device. However, you will be able to plug USB 3.0 devices — and cables — into your current computer; you just won’t get the speed advantage. (Note: To get the most out of USB 3.0, the cable needs to be less than about 9 feet long, down from the USB 2.0 16-foot limit.)