is this the old or new version?

Don't know what you mean by old version or new version. But a speed of "Up to 100 MB/s" is not a fast Flash drive. It is OK, but if you want something more useful, then get a drive with speeds up to 300 MB/s, or get the SanDisk Extreme Pro, with speeds up to 450 MB/s. Much more expensive. But you get what you pay for.