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USB to CAT5 Adapter and HDMI Splitter/Booster

Alright, so I won't go into the crazy details on what I'm trying to do; those are listed here
http://www.tomshardware.com/answers/id-1954806/good-idea-attach-computer-tvs.html

I just need some clarification on 2 things.
I have 4 old USB to CAT5 adapters that came with my old DirectTV cable service hardware. Could these be used on either end of a CAT5 Cable to make one super long USB Cable? I need it to run through my attic to another room.
Example:
USB - adapter - CAT5 - adapter - USB

I know that both USB and CAT5 can both carry electrical power. I'm thinking that the distance of everything combined would be 60-70 ft MAX. All I'm looking to plug in would be a mouse or USB game controller. Would I need some kind of power booster, or would the cords themselves be able to carry enough current that far?

I'm also thinking of using an HDMI Splitter/Booster. I want to plug 1 computer into 2 different TVs in 2 different rooms. I do not want dual display; I just need every screen to show the same main display. I am simply tired of hauling my compy back and forth between rooms. The splitter is - 1 Input 2 Output. I can't think of any reason why this should not work, especially since I won't even have both TVs on at the same time.
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  1. 60-70 feet over USB will not work.

    http://en.wikipedia.org/wiki/USB#Cabling
  2. I know that USB in of itself can only go 5 meters, but there are a plethora of USB to CAT5 adapters on the market (including the ones that I own) that claim to be able to extend this length to 50 meters.
    http://sewelldirect.com/superusbextender.asp
    Mine are not this brand, but are the same thing. Are all these gimmicks as far as advertised length goes then? (I know they work over short distances; I've seen them work)

    Or would I be better off going with something like this?
    http://www.ebay.com/itm/50Ft-50-Ft-USB-2-0-Extension-Repeater-Cable-Signal-Booster-A-Male-to-A-Female-/360820166793
    Or is this a gimmick too?
  3. Best answer
    No idea if they'd work or not. You'd have to try them.

    Bu the USB distance limit is based on getting a return signal within a specified period of time. Basic physics dictates that a signal can only travel so fast, no matter what repeater things you put in the middle.

    Again...you'd just have to try it.
  4. I guess I will simply have to try then. Thanks. :)
    If not, do you have any other suggestion at all? Any kind of wireless transmitter possibly?
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