a great sony product. bought mainly for transfering/transporting (bulky) files. works with xp & windows7. i quite like the pen click style coz no caps to lose, though the automatic retraction when removing from the usb port/socket always makes me think i've broken it. only downside of no cap is that the plug is not dust-protected. the small hole at the end works well with lanyards, couldn't fit my keyring though (maybe a small, thin one?). be aware that light flashes on the orange bit when the drive is in use.
only 4 stars because quite expensive. you can get a 16gb of a different make for the same price...but then again, i've always been a sony fanatic.