Issue connecting Vodafone USB Stick Modem with Macbook Pro

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I have a Macbook Pro, Yosemite 10.10.4 and i'm facing an issue connecting my Vodafone 3G USB stick modem model no. K4201, ZTE Corporation. I was able to install the software for mac and the dialer is also loading with USB stick connect to macbook pro.

The connect button seem to be disabled and I'm not able to connect to internet. I have tried to add the network setting within the vodafone dialer but it did not make any difference and the button seems to be disabled.



I tried to add the USB Modem through network setting in the macbook, but i'm not able to find USB Modem option in the list. I again tried to add new network settings in the list but failed to find the relevant settings.



Please suggest.


MacBook Pro, OS X Yosemite (10.10.4)