HI Andy. U3 drives will always be described as such in the description or in the specs. If you go for a SanDisk drive, they do both U3 and non U3 versions of some of their drives, but their high end drives like the Cruzer Contour which I own will come with U3 smart technology. If you want to play it safe, I suggest you go for the play drive although check the read and right speeds as the size may be good, but if it takes forever to copy large files over you might regret your penny pinching. ----- Original Message ----- From: ANDY COLLINS To: access-uk@xxxxxxxxxxxxx Sent: Monday, January 05, 2009 12:27 AM Subject: [access-uk] Confused now about Pen drives Hi all - I was looking on Play at USB flash memory, and although some drives are advertised as being U3 drives, many are not, just saying they are say, 4 or 8 or 16 GB USB flash memory. I've kind of decided to avoid U3 drives as it seems they need to be set up some how, and all I want is a portable USB memory stick! Anyway, from reading some reviews, some people have said things like they installed and ran an OS from a Sandisk flash drive. the drives they are talking about, didn't mention being a U3 drive, and this is my confusion, do U3 drives always have U3 mentioned in their description or not? Play themselves, do a 16GB USB flash drive, but again do not say if it is U3, what they do say is that it is compatible with Windows 2000 and XP, and several flavours of Mac OS, but they don't mention Vista! I'd really apreciate some help in clearing this one up as I don't know what to go for! Many thanks - Andy