SanDisk Extreme Pro 8GB microSDHC Memory Card Class 10 UHS-I SDSDQXP-008G-FFP [Packaging "Free Packaging Amazon Frustration"] (Accessory)
I inadvisable to use the raspberry pi: after one week, she crashes my system. So, I installed a HDD and I use this card to boot read-only. This is the classic hard disk which then does the work.