Memory cards are now the accepted medium of storing various files due to their size and huge capacity. They are also used in portable devices like cameras, mobile phones, and music players. The problem with memory cards, just like with any other new standard, is the presence of multiple and competing standards that are brought by the different hardware manufacturers. These different standards are usually proprietary and are not compatible with each other as they strive for format supremacy.
Whatever type of memory card you use, sooner or later you would need to connect it to a computer in order to transfer your files to a computer. If all your devices use the same type of memory card, this is rather easy as you would only need a card reader that supports that format. But it is quite common for people to have multiple devices that have use different types of cards, not to mention the devices of other members of the household. Because of this, you would need multiple card readers unless you have one that supports all formats at the same time.
The Memory/Sim card reader supports all the card formats along with their smaller versions. This makes it an all around tool for your card interfacing needs. It also uses the USB 2.0 port which is the most common port and has been upgraded with faster transfer speeds to make copying or moving large files quicker. The compact and lightweight design means that it is quite easy to bring wherever you go inside your bag or even in your pocket. This reader has no cords or cables that can get tangled up or cut.
Aside from being a card reader for your memory cards, you can also use it to read or write data to your SIM cards and are even compatible with newer 3G SIMS. You can use this card to back-up or restore your contact list and messages from your SIM card to make sure that you won’t lose them even if you lose your phone. You can also use this to transfer all your contacts and messages to another SIM if you want to change numbers.
The listed features above makes the Memory/SIM card reader an indispensable tool for everyone who owns a memory card or a GSM/3G mobile phone. Even if you own identical memory cards, you are better off with a card reader that can read all kinds of memory cards because you would never know if you would buy a new device that uses a different type of card.
There are cards with various capacities, speeds and formats. Due to the available variety, it becomes easier to choose a card according to your needs and budget. The good thing is that SanDisk cards are available for your digital cameras, 
