Definition: Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.
Input: I replaced the Motorola SB4102 with the new Motorola SB5101 and was very satisfied.  I didn't think I needed a new cable modem, but after installing the SB5101 my performance increased dramatically.  This is a great product.  I give it a full five (5) stars.

Motorola SB5101 modem