It defines a new SuperSpeed transfer mode, which relates to new backwards-compatible plugs, receptacles, and cables. The USB 3.0 provides a data signaling rate of 5.0Gbit/s.

But it is reasonable to get only around 3.2Gbit/s (0.4GB/s or 400MB/s) due to the overhead incurred by 8b/10b encoding and the 4Gbit/s payload throughput. On 31 July 2013, the USB 3.1 was released by the USB group. The USB 3.1 specifications replace the USB 3.0's SuperSpeed transfer a double rate - 10Git/s and reduces line coding overhead to only 3% by changing the encoding scheme to 128b/132b, the transfer speed arrives at 7.2Git/s. Also, the standard of USB 3.1 is compatible with USB 3.0 and 2.0 version. The Mini USB is another USB standard, which is smaller than the normal USB, more compatible with small electronics like mobile devices, etc. It is divided into A type, B type and AB type. The Mini USB B type is the most common interface because of the outstanding anti-wrong plug and compact size. It is widely used on SD card, MP3, digital camera and removable hard disk. The Micro USB is the portable version of normal USB 2.0, the interface is smaller than Mini USB of some smartphone. External dvd drive usb 2 vs usb 3 portable# It is the next-generation of Mini USB, supporting OTG and with the same pin quantity - 5 pins. The special feature is that owning stainless steel case for no problems cause when it is plugged in and out ten thousand times.Some points: DVD at 8X writes at 1.32MiB/s * 8 = 10.56MiB/s, not 36MiB/s (36MiB/s is for BluRay at 8X).īut if Read medium is also on USB 2.0 (read from an enclosure and write to an external USB DVD writer) it can saturate USB 2.0 bus speed very easy. External dvd drive usb 2 vs usb 3 portable#.External dvd drive usb 2 vs usb 3 serial#.

Usb 2 vs usb 3 dvd drives