As we know, now the zigebee binding works with TI2531 dongle which is also a evaluation board for the cc2531 chipset. http://www.ti.com/tool/CC2531EMK
However, for this TI2531 evaluation dongle, the original firmware is
NOT what we need. we need to program another firmware from TI website. http://www.ti.com/tool/z-stack
There are a number of these boards available if you search the web although there aren’t too many nicely packaged products. I know that the PINE64 guys have one as well but I don’t think it’s available yet.