Despite the best attempts of many an interested party, Secure Digital memory cards have become more or less the de facto memory card format. CompactFlash remains popular among photographers, and Sony continues to soldier on with its mad variety of formats but in general Secure Digital has won out and the great majority of consumer electronics devices support it.
With devices becoming ever smaller, new SD memory standards have been created including miniSD and microSD which, as the names suggest, are smaller versions of SD cards, which are compatible with SD card interfaces via adapters.
To the untrained eye the OCZ Trifecta is just one of these adapters, but in actuality there's a little more to it than that because it effectively combines microSD, standard SD and USB functionality into one SD card sized device.
Actual memory is provided by a 2GB 66x microSD card, which measures a tiny 11 x 15 x 1mm and weighs less than a gram. That card slips into the side of the SD card adapter, which most will be familiar with, and a plastic cap on the end can be removed to reveal a four-pin USB compatible connection which provides USB connectivity to create a standard USB Mass Storage Device.
This is useful on many levels. Since the actual memory is on a microSD card it can be used in any number of mobile devices, including mobile phones for music playback or media functions. The SD card adapter means it can also be used in devices that use SD cards, such as Digital Cameras and GPS devices and, finally, the USB interface means you'll never be stuck for a way for getting that data to a PC. And, as if the convenience weren't enough, the USB 2.0 interface should, in theory, be quicker. What more could you want?
Design wise everything is pretty simple; it is an SD card after all. The microSD card slips snugly into the side of the SD card adapter, while the cap that covers the USB connection is well fitted so it won't fall off inadvertently. That said it's somewhat inevitable that the cap will be very easy to lose. It's a shame that OCZ didn't adopt a flip back design like SanDisk did on its Ultra II Plus USB card.