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 Post subject: Rj-46 to usb
PostPosted: Wed Nov 18, 2009 9:37 pm 
Sharptooth
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Is it true that u could cut the usb cable and connect it to the rj 45 cable?


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PostPosted: Wed Nov 18, 2009 9:43 pm 
Million Club [PC]
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no. RJ45 is electrically incompatible with USB, and they're for different applications. RJ-11 does have the same pin count as USB, but it's still electrically incompatible. You could cut the USB connectors off a USB cable and splice in RJ11 connectors on both sides, but that just makes it a janky RJ11 cable.


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PostPosted: Thu Nov 19, 2009 7:38 am 
Thoroughbred
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I have seen a build where a guy used a eithernet switch for a itx build and made custom rj45-usb cables and then used the eithernet ports for usb ports.
so i would say it is possible.


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PostPosted: Thu Nov 19, 2009 7:48 am 
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As far as I know, the only USB-RJ-45 is USB ethernet, which requires an active adapter.


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PostPosted: Thu Nov 19, 2009 9:24 pm 
Sharptooth
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killerxx7 wrote:
I have seen a build where a guy used a eithernet switch for a itx build and made custom rj45-usb cables and then used the eithernet ports for usb ports.
so i would say it is possible.


do you remeber when you seen this?


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 Post subject:
PostPosted: Fri Nov 20, 2009 12:02 am 
Thoroughbred
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ninjastar wrote:
killerxx7 wrote:
I have seen a build where a guy used a eithernet switch for a itx build and made custom rj45-usb cables and then used the eithernet ports for usb ports.
so i would say it is possible.


do you remeber when you seen this?


Im pretty sure it was over at www.xtreamsystems.org.


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 Post subject:
PostPosted: Sun Nov 22, 2009 2:59 pm 
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We need a little clarification here before anything else.

The RJ45 is a connector type and not a cable. A RJ45 connector has 8 positions and is commonly used for LAN applications using a CAT 5 or CAT 6 cable. The actual pin out can be configured for a patch cable or for example a crossover cable in LAN apps. Of the 8 lines only 4 are actually used in LAN applications. There are 4 data lines and no power lines within the LAN configuration.

This is a good read on that note. Just remember there is no RJ45 cable. RJ45 is a connector type.

USB is just that it is a Universal Serial Bus and only has 4 lines used. However those 4 lines include power of 5 Volts and a common and only 2 data lines. In this case the connector used is called a USB connector.

Any connector can be used in a custom application depending on if the connector will do the job required of it.

This link explains many of the LAN protocols in use.

This link explains USB protocol.

Quote:
I have seen a build where a guy used a eithernet switch for a itx build and made custom rj45-usb cables and then used the eithernet ports for usb ports.
so i would say it is possible.


The key word there is custom. Yes, that can be done.

Ron


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