The installation runs on Windows XP and Vista smoothly and quickly. There is no CD required because the drivers are stored on the stick, ie insert, can be installed automatically and you're done. Linux drivers are also included, but I have not yet tried. Once installed can be the stick with a micro-SD card to use as a storage medium. The data connection is faster than expected. Theoretically 7.2Mbit are possible, practically I'm mostly just over 2Mbit. Reaction times come before me but shorter than my DSL line with router.
The processing is moderate: holding the cover for the SIM card tray and the cover for the USB connector, but do not sit perfectly. However it does not bother me.