08-13-2011 09:46 PM
I have recently converted my internet cable service from a PC to a Mac. There is an inline device called SMC on my PC connection that receives a large male phone jack style plug in from the modem and converts to a USB going out that was then connected to the PC. The mac internet input is not a USB rather the large phone style plug. I have connect the mac to the modem without this SMC device and am wondering what exactly it does and how necessary it is. My mac runs fine without it.
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08-14-2011 11:51 AM
You presumably needed the SMC USB-to-ethernet converter bacause your PC did not have its own RJ-45 ethernet interface (the "large phone jack"). Your Mac has the needed interface, so you don't need the converter and are better off without it, since USB was really not designed to be used for networking.
Should you want to go online with the PC again, note that you need to power-cycle** the modem whenever you change the device is directly connected to it. To avoid having to do that, you would need a router, which would also allow you to use both devices simultaneously.
** Unplug power for 30 seconds or so, then plug it back in. For modems that have an internal battery backup because they also provide telephone service, you would instead use the reset button that is typically hidden behind a small hole in the back of the modem.
08-14-2011 05:35 PM
Melvin, thanks for your response. I am a little more confused now though as I was told the SMC was a router and that I could set up a network with it. Putting SMC back in line from modem to PC and setting up network on PC would allow me to then run Mac from SMC...wireless. Is this correct? My other confusion comes from...after checking the back of my PC, it does have the RJ-45 jack, so I'm not sure why my internet connection was converted to the USB. Would I be better off eliminating the SMC all together, hooking up modem back to PC to the RJ-45, getting another router and then running Mac off of it wirelessly.?? Another variation might be utilizing the SMC as router, but converting the male end which is USB, back to RJ-45 so I can plug into that port on PC. Then all I need would be something to convert from USB to RJ-45. My SMC is female RJ-45 and male USB.
08-14-2011 05:51 PM - edited 08-14-2011 05:52 PM
If this is what you are talking about then it is just a converter and doesn't send wireless signal nor setup a network, thats what a router does. When my friend was setting up his internet a long time ago the self install kit came with one of those adapters for people who didn't have ethernet ports in their computers which is now pretty outdated. If you can plug in directly to the ethernet port without using the adapter then you should do it, all that is going to do is slow it down.
08-15-2011 09:42 AM
I agree with John and doubt that your SMC device functions as either a router or a wireless interface, though knowing the model number would be helpful. It can be used to connect to a network, but so can the RJ-45 jack on your PC, and using that would be preferable unless, of course, that interface is somehow non-functional.
If you do get a router, you would connect the router to the modem, and then both your PC and your Mac would connect to the router, either wired or wirelessly. Any of the major router brands (Linksys/Cisco, Netgear, D-Link, couple of others not quite so well known) should work fine. If you are renting your modem from Comcast, they will also supply a basic wireless router for just a one-time shipping charge.
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