Instruction: Answer the given question using the supporting document.

Input:
Question: Do you hook up to it by coaxial or Ethernet cable?
Document: Received the 5352 (unit + power cord + ethernet cable) in a box, well packed with bubble wrap.On receiving the zoom 5352, contacted my cable provider, RCN. After providing them the CM MAC address (listed on the back), the modem came online, and I was connected.A week, the modem went offline. RCN was unable to resolve the issue and swapped out the 5352 with their own modem.
THEN hook it back up, and turn it on.And it worked.Apparently, with this modem (and a couple of others), after they program it, it needs to be absolutely off and powered down for over that minute mark. Then I had my Roadrunner cable back.SO - no problems with the modem since. I am not resetting it every day, as I was with the TW supplied one, and it is just working.
Creates a very fast internet connection if you hooked up with ethernet wires, however, the WiFi range is only about 50 feet. Thus, I cannot recommend this router.
When I saw this modem on Amazon, I thought, that looks robust. So, I bought it. The Wi-Fi has been the most challenging thing about the unit. I played with it for quite some time before I got it to work. When I got the Wi-Fi to work, the speed was so slow it was not useful so, I just use Ethernet connections  . Three days after I hooked it up, the unit stopped sending Ethernet signals to our computers.
Bought to replace Motorola Surfboard SBG6580. Arrive quickly, upon connecting to Xfinity DOCSIS 3.0 -105Mb Broadband it would not work. Problem was apparently in the built-in DHCP server. It connected to broadband but refused to provide IP address to both Ethernet Connected devices or Wi-Fi device. Called J & R  Electronics they said they would ship another as soon as the old one was returned. However, they would not pay for the shipping which cost me about $8.
great for use with Time Warner Cable internet!
This seems to be a good cable modem/router combo for the money!
Just had Cable Internet connected to my house and had no issues with this at all. Great Wireless signal throughout the house.
Works great and saved me a ton of money with the cable company. I own the same one they wanted to rent me.
It' a router and a cable modem keeping us wire free throughout the house. And it's compact and handsome to boot.
Answer: Coax and them you call the cable company and they ask for some code numbers which come with the device and activate it for your account. I replaced an existing digital box and Linksys wireless unit with this single device. Have had no issues for the 4+ months I have owned it.