The FAQ says the following is on topic

> computer hardware,  
> computer software, or  
> personal and home computer networking

and this is not

>    programming and software development,  
>    video games or consoles,  
>    websites or web services like Facebook, Twitter, and WordPress,  
>    electronic devices, media players, cell phones or smart phones, except insofar as they interface with your computer,  
>    issues specific to corporate IT support and networks,  
>    asking for a shopping or product recommendation,  

Cell phones and smart phones are mentioned explicity, but tablets are not. 

Are tablets are on or off topic and does the OS matter?