Instruction: Answer the given question using the supporting document.

Input:
Question: I have Comcast in my area....do I need to pay for 6 tv outlets with Comcast to have all 6 tuners working, or just one?
Document: After six visits from Comcast and me taking my machine to their office that has a direct fiber connection I was still unable to pair my CableCARD. I will give credit to Comcast, they went above and beyond to try to get my card working but after all is said and done the Ceton PCI card is defective. Now I need to jump through the return process.
I upgraded from the 4 tuner to the 6 tuner Infinitv PCIe. The package arrived quickly and installation was a breeze. I swapped out the cable card and contacted Comcast to unpair it from the old one and pair it up to the new one. I tested recording 6 programs at once to check for any issues. I'm happy to report that no issues were found.
Setup was a breeze and the card is up and running without any issues. I have Time Warner Cable in the Los Angeles area and didn't want to pay for the DVR. Definitely the way to go.
This device is amazing. Picked up my Cable Card from my provider and 30 minutes after of getting home I had windows media center / the guide / recording setup and 6 tuners at my disposal. With plenty of Xbox 360s laying around  (ordered 2 slim 4GB models there cheap and great extenders with a remote). I have noticed no degradation in viewing compared to my cable boxes. At 15 a month for 4 DVRs this card will pay for itself in no time.
This is great!I have 6 rooms with cable now using the Ceton Echo and/or a Windows Media Center PC. The best part is I only have to pay $2.50 a month to rent a cable card.+Centralized DVR management [possible to split cable recording by using multiple media centers, if needed]+No more rental fees per cable box [up to 6 rooms! ]+Add recording capacity at your own leisure+Smooth playback+No other device can do 6 tuners
Better than anything your service provider can give you, better than TiVO, or any other tuner/DVR set up. With 6 tuners, you have plenty to network the tuners to other HTPCs in your home. However, I am using Xbox 360s as extenders around the house so have no need for any cable boxes.
The individual tuners work perfectly with excellent HD quality. We love it...and now we can give back that dinosaur of a DVR that we have been paying for each and every month. (Thanks, Time-Warner, for the clunky hardware, but we've moved up to the next level and will no longer have to pay your monthly rental fees for inferior equipment.) My only lament about this card is that it does not offer dynamic tuner pooling/sharing, which the InfiniTV 6 ETH does.
I still have my PCIe 4 card working with Comcast cable TV and will continue to use it since it saves me money on hardware rental fees but I am really disappointed this new version didn't work out.
After couples of day going back & forward with Comcast to make it work. Finally,  it's working and it's working GREAT!!!! !
Love this device. Took me a long time to decide to make the switch to a cable card and windows media center. Finally went for it, and decided to buy this card for the long-term extensibility. (I thought 4 tuners might be enough, but eventually I'll probably be glad I have 6. )Opened up my computer. Plugged it in (no extra power needed). Plugged in the cable card (had no problem getting one from TWC).
Answer: You just need one cablecard which is fairly inexpensive. The first card may actually be free.