I purchase this to replace the stock Ambit modem from Charter Cable . in summary , the modem install flawlessly and I do see a improvment in speed -lrb- accord to dslreports_dot_com I be run twice as fast at time -rrb- . the setup with Charter be very easy , with no phone call need . everything be do online . after insure the modem be work correctly I then install the wireless router -lrb- Belkin n + wirelss router -rrb- . it too , install flawlessly and install easier than with the stock modem -lrb- I often have to start - restart the modem and router before they would communicate . I would recommend this product . it do what it be suppose to , and installation be a breeze .