More USB 3.0 details emerged


Every­body knows that intel is work­ing on USB 3.0 spec­i­fi­ca­tion and it released it recent­ly. When USB 2.0 emerged it increased the band­width of USB 1.1 from 12Mbps to 480Mbps. But this time the USB 3.0 is upping the band­width to 10x mak­ing it to 4.8Gbps. The max­i­mumpc is dug­gup some details about the spec­i­fi­ca­tions that is what we are going to discuss.

The key points are

USB 3.0 will be back­wards-com­pat­i­ble with USB 2.0

Like the USB 2.0 is back­word com­pat­i­ble to USB 1.1, the new USB 3.0 is also back­ward com­pat­i­ble to USB 2.0 allow­ing us to use the USB 3.0 devices to work with the exist­ing but with reduced capac­i­ties. You are not able to use it full poten­tial untill you use USB 3.0 cable with super­speed devices and ports, but at least plug­ging a 3.0 cable into a 2.0 port won?t blow up your PC. The spec­i­fi­ca­tions com­pat­i­bil­i­ty lies in the design of the new con­nec­tors. USB 2.0 cables worked of four lines ? a pair for data trans­fer, one for pow­er, and the last for ground. USB 3.0 adds five new lines, but the new con­tacts sit par­al­lel to the old ones on a dif­fer­ent plane, as opposed to being adja­cent to them. This means you?ll be able to dif­fer­en­ti­ate between 2.0 and 3.0 cables just by look­ing at the ends.

The max­i­mum speed of USB 3.0 is 4.8Gbps
USB 3.0 will be 10x faster than the 480Mbps lim­it of the USB 2.0. The exam­ple Intel give out when talk­ing about the new speed is that trans­fer­ring a 27GB HD movie to your USB 3.0 device will only take 70 sec­onds with USB 3.0, while it would take 15 min­utes or more with 2.0. Keep in mind that you?re only going to be able to take advan­tage of this speed if your portable stor­age device can write data that quick­ly. Sol­id state devices will ben­e­fit most from the speed boost, while mag­net­ic HDDs will be lim­it­ed by their RPM and its read/​write speeds. Also, new Mass Stor­age Device dri­vers will have to be devel­oped for Win­dows to take advan­tage of the specifications.

Uploads and down­loads are kept on sep­a­rate data lanes

To achive 4.8Gbps added five new data lanes to the exist­ing four lanes to sep­a­rate the upload and down­loads on dif­fer­ent lanes. With USB 3.0, two new lanes will be ded­i­cat­ed to trans­mit data, while anoth­er pair will han­dle receiv­ing data. This not only accounts for the sig­nif­i­cant speed boost, but also allows USB 3.0 to both read and write at the same time from your portable stor­age device. Pre­vi­ous­ly with USB 2.0 it was like it works uni direc­tion­al at time. This bidi­rec­tion­al trans­fers allow us to back up to stor­age devices to do faster and effi­cient transfers.

USB 3.0 will charge more devices, quicker

USB 3.0, as increased speeds, it also car­ries more pow­er as com­pared to USB 2.0. The old specs uses 100 mil­liamps is bumped to 900 mil­liamps. facil­i­tat­ing us to charge more devices on sin­gle hub.

USB 3.0 will be more pow­er efficient 

The best of new spec is more effi­cient pow­er-usage pro­to­cols. USB 3.0 aban­dons device polling in favor of a new inter­rupt-dri­ven pro­to­col, which means non-active or idle devices (which aren?t being charged by the USB port) won?t have their pow­er drained by the host con­troller as it looks for active data traf­fic. Instead, the devices will send the host a sig­nal to begin data trans­fer. This fea­ture will also be back­ward com­pat­i­ble with USB 2.0 cer­ti­fied devices.

Read more –> Every­thing You Need to Know About USB 3.0, Plus First Spliced Cable Photos