Strong performance: The HP prints colour presentations on A4 pages for around 5 cents. No other model in the test achieved this at such a low price. And photos were also very inexpensive at 14 cents. Moreover, the print quality is high. But the HP, which is equipped with fax, scanner and copier and weighs almost eight kilograms, also has weaknesses...

With the 660, the manufacturer has a very nimble printer whose text printing is quite good. Graphics and photos, on the other hand, are not its strong point, and if you can live with that, the HP is an inexpensive printer whose printing costs are also low.

All in all, this is a successful printer, not least because of the very good price-performance ratio. The printing costs are pleasantly low and the print quality is also very high. The speed, on the other hand, is low and there are also a few gaps in the equipment.

The HP Officejet 6600 fulfils many requirements for office use: Especially when printing, it showed excellent quality in the test, and it also has a WLAN module and a colour fax. It supports Apple AirPrint as well as HP's ePrint technology. However, it lacks a hardware duplexer and a LAN port.