RB450G could not find switch chip features

RouterOS General
1

Hello,

Would you like to tell me how could i enable switch feature from my RB450G. I could not find this features in my RB. But my RB750G have this feature, and i access those menu from RB750G. Please let me know . What should i do ?

2

You mean, you have nothing there?

/interface ethernet switch print 
Flags: I - invalid 
 #   NAME                                  TYPE         MIRROR-SOURCE                                 MIRROR-TARGET                                 SWITCH-ALL-PORTS
 0   switch1                               Atheros-8316 none                                          none                                          no
3

SOLVED.
Mikrotik Support suggested to upgrade Router OS. I am using older version V.3.5 so that the switch chip is not available in this version.
Thanks MT .