Documents, files in for work or for personal use, everything is stored on your computer today. But when the hard disk memory is full, you need external memory devices or data transfer or to preserve their format. Current technology allows the acquisition of digital data storage products, compatible with any computer or mobile phone.
External memory on hand
If you own a computer and a mobile phone more powerful, and certainly you need digital data storage devices, especially when the hard drive or memory capacity of mobile phones is over. Choosing a powerful memory stick or a memory card for mobile phones is very important: compatibility, transfer speed or ability to install programs that allow a faster transfer of data visualization important criteria of choice.
To choose a USB memory stick with wired or wireless is very important transfer rate and the number of gigabytes. There are sticks manufactured by companies that have already made a reputation in the field, and this is another criterion by which its users buy a USB memory stick. Also, some buyers want to know if it is compatible with the operating system you are using your computer for example, there are products that are not compatible with Linux or other systems.
The memory card must be compatible with the product that you own (computer or mobile phone, iPod or camera). The cards are of different types: Compact Flash (CF), Secure Digital (SD – Micro or mini), Multimedia Card (MMC) … Also, some companies issue cards created specifically and exclusively for their products. The difference between cards can be done depending on the intended device. An important point in choosing a memory card, besides compatibility, is digital storage capacity (memory) and transfer speed. 
Another option is used for computer external hard drive that will definitely add a substantial number of gigabytes of memory today. In fact, not much point to bother with small digital storage devices; you can buy something more useful for your computer. Obviously, not included in the calculation and increase the amount of memory for phone and other devices.
