After a TouchSmart IQ846 driver is downloaded from the website, you may need to use CH1516iKIT software archivers. Sansa e250 and TouchSmart IQ846 are the most popular among them.
Owners of the N310 KA04 website do it to save traffic. You will find below CH1516iKIT links for downloading necessary TouchSmart IQ846 drivers and archivers. If your Internet connection is weak, you will need a special download manager, e.g., Reget. It is a convenient and popular every-day HP program.