this product be unbelievably excellent , in fact , I would like to call it miraculous ! I be previously use a ordinary 4 port digital splitter -lrb- 5-2300mhz -rrb- where my cable modem , wireless router , and 2 t.v. 's be connect . this be ok for about 3 month when suddenly , I get no signal from my cable modem and wireless router , and some channel be miss in both T.V. 's . after some troubleshooting , I find out that the splitter be not work anymore . so I test a spare digital splitter of the same spec , with the same result . frustrated , I purchase another splitter with a narrower range , from 5-1000mhz from best buy . my heart sink when it also produce the same result . I call my service provider to try to get a recommendation as to what type of splitter to use , but they refuse , and attempt to pressure I to let a technician come to we house and do the connection . this , of course , for a stupid extra cost : one for the installation of a new line , and another for a extra monthly charge . I bluntly tell the customer service agent that I will not allow that and should not spend a single cent to troubleshoot the problem . they attempt to pressure I to send a technician to we house miserably fail . finally after research in the internet about similar issue , I come up with many cutomer recommend the use of this product for cable modem and t.v.s. I order this Motorola BDA throuh AMAZON , ask for a 1 day delivery , get it as guranteed by AMAZON , then install it . only after a few seconds , my cable modem , router , and T.V.s respond very well and my problem be solve . my browser become wicked fast , and the quality of picture in both t.v.s be excellent ! there be one customer who say that cable modem should not be amplify - I tell this customer he be dead wrong ! in my case , cable modem do not get any signal , until I install this amplifier . I would highly recommed this product to all customer with similar situation !