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| USB Extension cable and performance |
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| Blanka:
If it works, it is OK. I guess a hub adds delay, an extension not really. |
| WhereEaglesDare:
bottom line, cut open the usb cable you wanna use, splice in some cat5e to make it long enough, and see if it works. dont waste money unless you have to, if it is inside your cab nobody will see it. Use butt splices to connect the wires, and make sure you tape it real good so it dont come loose. |
| MonMotha:
--- Quote from: WhereEaglesDare on May 01, 2010, 11:07:16 am ---bottom line, cut open the usb cable you wanna use, splice in some cat5e to make it long enough, and see if it works. dont waste money unless you have to, if it is inside your cab nobody will see it. Use butt splices to connect the wires, and make sure you tape it real good so it dont come loose. --- End quote --- Ug. DON'T do that. That makes everything way worse. Just use one of those really common USB extension cables. If it works. Great. They often do. If it doesn't work, get a quality hub, and be done with it. --- Quote from: R0UNDEYEZ on May 01, 2010, 01:20:35 am --- --- Quote ---It should have been limited to either ~1W (low power devices like flash drives) for safety reasons or extended to about 25W to be able to run things like hard drives, printers, scanners, etc. --- End quote --- as nice as that would be, where is all this power coming from? i think the average user probably uses stock power supplies that have 350w tops that is already running everything (processor, motherboard,harddrives,optical drives, fans etc) having a standard that would allow them to draw over 100 watts off a single run of the mill hub seems like asking for problems to me, plus you know how people are with extension cables and adding extensions to extensions haha --- End quote --- USB has almost excessive provisions for power budgeting as it is. It would be nice to have a reasonably high maximum that the host can then dole out as needed. It's unlikely most people would need to pull the full 25W from each port at the same time. Most ports will just have things like flash drives, mice, etc. hung off them, and devices like scanners and printers don't pull that much juice when inactive. Dell (king of tiny power supplies) actually was onboard for a "USB+Power" that extended the power available via a USB port to like 50W using an extra connector chunk. It didn't catch on, unfortunately. IEEE1394 allows for some excessive amount of power to be moved around, too. Some posit that's why Apple calls it "Firewire" :) |
| Ed_McCarron:
--- Quote from: WhereEaglesDare on May 01, 2010, 11:07:16 am ---splice in some cat5e to make it long enough, and see if it works --- End quote --- I bump into this constantly. People assume "Well, cat5 is rated to 100Mhz, so it must be good cable to use for -X-" -- but the truth is that cat5 (and most UTP cables) are useless without the differential drivers at each end. A nice low cap shielded cable would fit the bill better. |
| phatmeat:
I use 2 six foot extension USB cables in my Dynamo plugged directly from the pc to the Minipac and a USB track Ball ( so its like a 10ft run ). I have no issues. |
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