Hi guys... I seem to have got into the shit as well. I bought a hp spectre x360 13-4290nz and now I can't find a pen. However, this is the most important function for me. For those it works: do you have a 4290nz?

no it seems not working (just bought one) but works fine with 13-4190nz

I use this pen for my Hp Spectre x360 and it works quite well.

I use the pen under Ubuntu 16.04 on an HP Spectre and it works well.