A few years ago I bought a SanDisk Ultra II USB SD card. How many years ago? About the time when 2 GB of memory cost around $50.
I'm quite sad that SanDisk has stopped making these. At the last PC Show (June 2012), I came across another SD card with a built-in USB plug.
Advantages: no moving parts. May not block any USB ports (SanDisk's card juts out on both sides of the USB ports and blocks the other one on my MBP)
Disadvantages: may be difficult to remove from some SD card slots.
Ok since I have 3 SD cards here I thought I'd test their speeds. How will the old Ultra II perform? The third card is a Kingston Class 4 that came free with my camera.
- Kingston Class 4: 30.8 seconds (5 MB/s)
- SanDisk Ultra II (USB port): 15.2 seconds (9 MB/s)
- Sharpen Class 10 (USB port): 8.3 seconds (17 MB/s)
Wow! The Ultra II is surprisingly fast for such an old card! And Sharpen's card matches quite well with the speed on the box (20 MB/s).
Added 13 July 2012