instead of lease a modem from my cable provider at 5 buck a month , I decide to buy a factory refurbish cm100 for 20 buck . I get it three day after I order it , install it , and within minute I be on the internet . it be be up for a month now , 24-7 . no complaint yet . Update : it be be up for over 16 month now , no problem . perhaps the best 20 buck I have ever spend .