How to distinguish between USB cable 2. 0 and 3. 0
SATA hard disk data line 2. 0 and 3. 0 of the appearance of the cable above don't see much difference, different cable manufacturers logo above the cable may be in color and cable of the specifications of the above has been clear about the cable support is SATA hard disk data line 2. 0 or 3. 0, but whether it is SATA2. 0 cables used in SATA3. 0 between hard drive and motherboard, or creative SATA cable custom 3. 0 cables used in SATA2. Between 0 hard drive and motherboard can be universal, will not have any specifications on the compatibility problems. SATA hard disk data line 2. 0 can refer to any of extended features, that is to say, with the above as a feature or combination of products can be called SATA2. 0 the hard disk. After new SATA2 SATA specification is very chaotic. 5 specification is SATA1. 0 a specification and six SATA2. 0 extension specification of continuum, and its launch or hard disk manufacturer, is convenient for system, because everybody all of a specification can be used in place of the existing standards. In fact, for ordinary consumers, everyone from SATA2. 0 or SATA2. 5 and so on in the name doesn't get much useful information, really should care about is the new hard disk have what function, advantage, to determine whether it is worth to pay for it. SATA3. 0 SATA2 compared final specification. 0 version besides bandwidth doubled to 6 gb/s. SATA hard disk data line 2. 0 and 3. 0 of the difference is that a new interface standard, is not different interface specification, two kinds of interface compatible with each other, is mainly the difference on the logic, to improve the performance of, or depends on the hard drive itself and the performance of the main board to decide, theoretically improve a lot, but the practical application of the general is not so obvious differences mechanical hard drives and solid state drives. In addition to SATA3. 0 for being at the same time resources as a priority in the processing of system arrangement, greatly improve the execution efficiency of the system. USB3. 0 and 2. 0 data line: 1. USB cable on 'USB2. 0 ', said the USB2 cable support. 0 communication protocol. 2. USB3. 0 is USB2 data bandwidth. Ten times the 0, can achieve 5 gb/s ( 480 mb / s) , the synchronization transmission bandwidth can reach 384 MB/s, this is USB3. 0 to 2. One of the primary difference between 0; 3. USB2. 0 for all kinds of equipment and application provide plenty of bandwidth, but the USB3. 0 cable manufacturer with high definition video, TB ( 1000 gb) Level storage devices, up to gigabit pixel digital camera, large capacity of the emergence of mobile phones and portable media players, higher bandwidth and transmission speed has become a must. 480 MB per second transmission speed may have not fast, what's more, at present no USB2. 0 device can achieve the maximum speed limit on this theoretical. In practice, can reach 320 MB per second is the average speed of already very good. 4. USB cable manufacturer 3. 0 to 2. 0 more energy efficient, for equipment temporarily in a wait state, you can use the power saving mode.