USB internet connection works, Ethernet internet connection does not

Perhaps I should take another look at what you want to accomplish.

What I think I know:
You want to use Ethernet instead of wireless for faster connections.
Wireless works
Ethernet returns error 651, WAN miniport

Devices:
Comcast ???? cable modem
Linksys E4200 Wireless router
Linksys WUMC710 (Wireless-ac universal media connector) A replacement for the E4200?
>> Cabled to Dell

PC
Linksys AE2500 USB Network Adapter (Dual Band N)
Intel(R) 82566DM-2 Gigabit Network Connection (NIC adapter download link)

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Ok, if I got all of that right, there are some things you should know.

The faster speeds expected from the LinkSys WUMC710 refers to wireless - it is the latest 802.11 protocol (AC). Your Linksys AE2500 USB adapter is 802.11 protocol (N), so you're only going to get N speeds using wireless.

Both routers have 4 ports (Gigabit Ethernet) so there's no improvement on Ethernet.

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Before moving forward, let's catch up.
You have the prowin32 exe from the Intel download page, but have not installed it.
>> you have some questions about the way to install it (modify or remove options)
>> which features to install (you show what is on the system now)
--> that was brilliant, there's a record of how it was.
--> could you also post the version of the current Intel Network Connection? Thanks

Britton30 pointed out the OEM disclaimer on the Intel site and suggested getting the driver from Dell.
>> Dell only offers XP and Vista drivers
>> Vista would be closest to Win7
Britton30 also suggested connecting the PC to the E4200.
>> Excellent suggestion
>> I'd like to know if blairk has tried a direct cable to the Comcast cable modem
>> before testing a device that will be replaced.
>> I undestand your thinking Gary - does Ethernet work with the other router?

>> I might be confused which is why there are question marks in Comcast ???? cable modem.
>> I don't think it's the E4200, I just don't know

Everything else should be put on the back burner for the moment.

I want to look up the WAN miniport error - it might be an easy thing to fix, or it might be a lot of trouble. These miniports don't have a driver, they're services.
Installing the Intel NIC driver might fix that, but wait - let me see what I can find.

So, I've painted the questions for you blairk in red.
If you could review my "What I think I know" and point out anything I got wrong, I'd appreciate it.
I also requested another SF diag report in post# 8 - please also do that while I'm researching error 651, WAN miniport

I'm not sure anything I had planned (update the Intel driver) will change, but I'm learning to slow down.

Hmmm, WAN miniport error 651 is related to PPOE. This is odd to see with Comcast, unless you are a DSL subcriber. Are you connecting to Comcast via DSL (over a phone line) or through a coax cable to a wall jack?

Also please post your IP configuration info:

Open an Elevated Command Prompt

   Tip

Standard keyboard shortcuts for Copy (Ctrl-C) and Paste (Ctrl-V) shortcuts do not work in Command Prompt.

Enabling the Quick Edit Mode in Command Prompt makes Copy and Paste operations easier.
See step 4 in Command Prompt - Copy to Clipboard to enable it.

Copy in Command Prompt: hightlight the text you want to copy, then press ENTER.
Paste in Command Prompt: right click with your mouse.

In the command prompt window type
ipconfig /all > c:\IPblairk.txt
exit

Attach the IPout.txt file to a post.

Thanks

blairk: This post is just a note to myself and will be deleted after I read your answers.
>> You don't have to do anything in this post.

Note to self: raspppoe

Ok, thanks. devmgr-4 doesn't show me the version of the Intel NIC driver.
In devmgr, double click Intel Network Connection, select properties, then driver tab
- that should show the driver version. post a screen shot of the driver tab

Hmmm,

Alright, I need a diagram of how you have the network.

Comcast coax goes to what?
from there it goes to the E4200
the WUMC710 is upstairs acting as a repeater
and the Dell connects to the WUMC710 across ethernet


If I got THAT right, then it would be difficult to connect to either the Comcast box or the E4200
Ok, this is going to take longer than I first thought - more pieces.

but it sounds as though it's a simple matter to reconfigure the two wireless devices.

Did the Dell use to talk directly to the E4200 Using the Linksys USB adapter?

About the ipconfig file - look on C:\ for IPblairk.txt
Attach that file to a post.

I'll look at it when I get back - have to run out for a bit.

Thansk blairk