Looks to be the older version V/4. Can you let us know what version they are once you receive them?

Thanks

got 2 they are older version...why in 2019 do they have 2016 version

They probably have old inventory to get rid of. Can't just throw money into the garbage can. It's a bit unethical in my opinion that the version is not posted. The old version ezb is totally different as far as performance than the new. Good news is that the old version can be upgraded inexpensively to version 2. The new board is sold on Ez Robot web site.

Do you mean the com board? As I thought that was the only part that was ever upgraded from the first version and needed firm ware upgrade after.