Ordered this and got a bonus as a SanDisk Extreme 45MB/s (instead of a 30MB/s one) arrived. My Raspberry Pi with Debian now boots to login in just 18 seconds now using this card as opposed to 1m40s with an old class 4 card. Absolutely fantastic. If you are using a R-Pi, you will need the Debian update files (kernel.img and start.elf) but if you have an R-Pi then you will know how to do the update. This card flies and is highly recommended. Thank you Play.com for a great card at a great price! Even beats Scan!