I would like to say thanks a lot for the after sales service.
Yeah, it's worth getting a longer warranty period for the modem because this seller will try to help if there is any problem.
And the seller got a delivery guy who can get to anywhere to deal with you.

There are a lot of modem choices to choose from but the service is perfect from this seller.
A highly recommended seller.

Will deal again if I need any modem in the future.