How can I tell which version I have???

winbox window title. or web interface->quick set

hello. i know that possible connect wi-fi usb-dongle with atheros inside to routerboard and use it for creation wireless network. but. as i understood, this feature is working only with old chips. but why mikrotik didn't make supporting of new chips with 5ghz wi-fi? i think, a lot of people will be ...

i have the same problem on rb951g and 5.24
could you give advice which version is better. i'm using mikrotik at home and only basic features
thnx!

p.s. the problem is not constant. time to time it's working good