Today we will be taking a look at some of the newer communication standards being used in flash drives. The USB 3.0 Flash Drive standard being used for communication in the newer model pen drives features a much needed improvement in both the connector and the protocol that was used for data transfer.

When we think about the advantages that we get in USB 3.0 connection over the now old USB 2.0; the USB 3.0 is a third generation standard which features 5.0gbps transfer rates, highly increased bandwidth, improved data flow control, improved power efficiency within the connector and backwards compatibility with older USB 2.0 standard.

Yes, All USB 3.0 connections also permit backward connectivity so users can connect a USB 3.0 flash drive to an older USB 2.0 port and still transfer data but only at slashed speeds. Talking about speeds, we saw USB 3.0 add a new feature to its drive including Super-speed which pushes the speeds of the device upto 5.0gbps which is a huge improvement as the older standard USB 2.0 was only capable of speeds upto 480Mbps. As USB 3.0 offers backward compatibility with the older standard it preserves the 4 data transfer types namely control, isynchronous, bulk and interrupt. Also it comes with four different types of connector types namely Standard-B, Standard- A, Micro-A and Micro B.

The reason behind USB 3.0 Flash drive packing a greater bandwidth and speeds is because of its tow unidirectional data paths which unlike the previous architecture has one for receiving data and one for sending it. This is a big improvement over the USB 2.0 interface which used only one-way communication channels. This indicates in networking terminology that the USB 3.0 Flash drives are Full Duplex while their older counterparts were Half-Duplex. This gives the USB 3.0 a potential bandwidth advantage of 20X over USB 2.0 connectors when connected in similar situations.


The High speed and newer protocol enriched USB 3.0 is better suited for high data communication, Due to the presence of both USB2.0 and USB 3.0 on modern motherboards, the USB 3.0 connectors are generally marked with a SS (Super Speed) sign or Blue insert. Lastly for those who are planning on running USB 3.0 devices on their laptops or tabs, one of their advantages is the power efficiency, which is an important consideration in computer architecture especially for those who are running on batteries. The USB 3.0 developers have replaced the continuous device polling with asynchronous one which uses lesser resources and reduces power consumption when the flash drive is in idle state.

This is pretty much the same case with Class 4 MicroSD Card and Class 10 MicroSD Cards.