Might be worth to get one if you can manage to find one (for a reasonable price). HP's price is very high. Don't know if they still deliver them. I've tried to use the PS2-style LK keyboards connected through a PS2 - USB dongle with my zx6000 with no luck. Kari On 17.9.2013 6:12, Sampsa Laine wrote: Just saw this on HoffmanLabs, intrigued by the AB552A model. http://labs.hoffmanlabs.com/node/19 sampsa <sampsa at mac.com> mobile +358 40 7208932 .