Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Do I need a CCK-W if I already have a router on my wireless modem?
Document: Use 3 of these DIRECTV CCK-W Wireless DECA Cinema Connection Kit (CCK-W) for my DirecTV DVRs. I like them OK.
Product works great, just need to make sure you have a newer wireless router as there are some issues with older routers.
If your house is wired with COAXIAL cable (aka: Comcast Cable), you should look at another product (search Amazon for &#34;DIRECTV Broadband DECA Ethernet to Coax Adapter DCA2SR0 Generation II&#34;) BEFORE you buy this CCK-W kit.The other kit only costs $8 where this kit costs $49.
I disconnected the DECA that was used to mate the ethernet cable between the HR34 and my discontinued Uverse router. The new ethernet connection now goes from the back to the HR34 DVR to the ethernet on the back of the CCK. (The CCK package was missing the blue ethernet cable. Not a big deal since I have extra cables in the house.
Simple to install and set up, works flawlessly as advertised. Eliminated the need to run a cable from my router to the back of the DirecTV receiver. Now my receiver has full internet access and I can use the internet features provided by DirecTV
Works well. Make sure you know which kind of DVR system/receiver you have from Directv. They send all that you need no matter which type you have, but it'll save you time hooking it up. Also it helps to reset your router once it's hooked up. Once I did that it kicks in and stays connected.
It's probably a nice item but I could not get it to recognize my wireless network. I spent over an hour on the phone with Directv "tech support", but all they did was read me the manual which I already did. In the end they told me to keep it and issued a refund anyway.
I am still struggling to get it to connect to my wireless router. I keep trying but now it will not even recognize my router.
great, easy set up to add to my wireless router. I now have internet on my direct tv so I can receive free on demand. its cheaper than ordering direct from direct-tv
Exactly what I needed to connect our living room DirecTV to our wireless router. Instructions included made installation only take a few minutes. Great price for a great product!
Answer: Unless your receiver is hard-wired to your modem, you will require this piece of equipment to use all of the receiver's functionality. This is the ONLY way to connect to your wireless modem unless it is hard-wired to your modem.