Can connect through switch, but not directly!

December 27, 2010 at 19:39:37
Specs: Windows 7
Hi guys,

I am using a Acer aspire 5610 laptop, around a year ago the NIC broke down, I just preferred using a USB-Lan converter instead of sending for repair. Everything was just fine. A week ago the USB-Lan converter stopped working. I bought a new one, checked on the same laptop was not working, I took it to the shop I bought we tested and it was working.

Anyway, after lots of experiment in office and home laptops/PCs, I found a fact and I was really surprised!

This converter works fine _if_ I connect a switch to the port, and get a cable from the switch and connect to the converter! but if I connect it directly to the port, it says a cable is unplugged!

I don't care about using a switch, I had one extra and just installed it, but I am really curious that how it's happening, and of-course if I can get the connection directly from the port its better.

(USB-Lan converter model: SR9600)
Thanks in advance.

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December 27, 2010 at 22:39:00
It's probably all to do with the type of ethernet cable you are connecting with. Many switches & routers have auto-sensing self-adjusting ports so it doesn't matter whether you use a patch or crossover cable. When you connect direct from modem or a wall plate ethernet port, if you use the wrong type cable you get the "Limited or no connectivity" message.
Patch cable is used to connect un-like devices such as Modem to PC or Router to PC.
Crossover cable is used to connect Like devices such as Modem to Router or PC to PC. When one or more of the devices has cable sensing self-adjusting ports it does not matter which type cable is used.

Goin' Fishin' (Some day)

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December 27, 2010 at 23:06:59
Thanks Richard59,

Yes, you are right, what is making me curious about this is that i didn't change the cable. I am connecting them with the same cable that I used to. Only the USB-Lan is changed, all other devices and cables are the same.

On the other hand it makes sense if we consider that the new USB-Lan I have bought is served as a different type of connector that the other one used to be. (the old one was DRxxxx and the new one is SR9600).

Regards Richard.

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