But what does V30 on an SD card actually mean? The V in V30 stands for Video ... V10, V60, and V90. A high Video Speed Class essentially indicates that the SD card is capable of handling high ...

But how did the SD card format come to be, and what does 'SD' mean? Hint: it doesn't stand for SanDisk. In fact, SD stands for "Secure Digital," and these little memory cards were originally ...