I have a Lenovo Mini USB keyboard N5901.  

It doesn't seem to work with the following image: Armbian_5.20_Orangepione_Debian_jessie_3.4.112

Can anyone assist on what I should do to enable the keyboard?

 

It looks like it's not supported withing legacy kernel, while it should work on recent (developing) kernels. Try there and then backporting driver from recent kernel if you really need it on legacy kernel?

I have a Lenovo Mini USB keyboard N5901.  

It doesn't seem to work with the following image: Armbian_5.20_Orangepione_Debian_jessie_3.4.112

Can anyone assist on what I should do to enable the keyboard?

I suspect it is time to buy a new supported device.  The N5901 is pretty old and was part of our HTPC.

Is there a list of supported devices?

No, we don't maintain such list. 

 

It strange that it's not supported if it's an old device. Legacy kernel (3.4) is also fairly old. It's hard to find older kernel in action except on some embedded devices.

 

I use myself one similar cheap (no brand name) wireless keyboard for testing and it's working fine.