ProxySTA on new Airport Express

Hello,

I know it was possible to activate ethernet port on previous Airport Express running in bridge mode :

Internet Wifi Signal -) -) -) -) Airport Express --------- Mac

I buy today a new Airport Express.

I configure teh AE in bridge mode (join).

The signal is well repeated.

But when I go in the config panel (wireless) I can't see the check box to allow ethernet activation...

So is the new AE accept this mode as the previous one ?

Best Regards