Onboard NIC issue with GA EX58 UD5

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First, unless those (2) NIC devices are 'Bridged' then don't use both. I assume IF you either Remove the Wi-Fi or Disable Wi-Fi in the Device Manager the onboard NIC should work. Maybe...possibly...if they're Bridged; this is like the Dual NIC use - see your Manual.

Also, your MOBO has Dual NIC 'Teaming' is another option.

Onboard H/W LAN1 [Enabled]
Onboard H/W LAN2 [Enabled]
Onboard H/W LAN1/2 (LAN1/2 port) [Enabled] ; Disabled if using another LAN device i.e. Wi-Fi

Page 60:
SMART LAN1/LAN2 (LAN Cable Diagnostic Function) ; run the diagnostic
Page 88:
Q-Share ; see possible configurations
Page 90:
'Teaming' another form of 'Bridging' ; your Router must support those features and most do not.

Bottom-Line, using a wired and wireless with such different ping and transfer rates is a really bad idea.

I can't wait to get home and try this, I bought the computer from a friend and didn't have any manuals or driver disks so I didn't even realize something like this was a possibility. Thank you so much for your reply.

Don't get too excited 'Teaming' and Dual LAN has very few uses, it's fine for a back-up NIC, having a LAN Party but little more.

As I said, I wouldn't 'Bridge' a NIC + Wi-Fi; it's pointless. If you can connect you your network from a 'wired' source then IMO remove the Wi-Fi it is MANY times s-l-o-w-e-r and has horrible latency compared to a wired network. Wi-Fi has no business on a Desktop; use a Poweline connection to your router.

Different network connections; current Powerline's are 2.5X faster and in most situations the ping time's are on par with wired -> http://www.youtube.com/watch?v=Sue1Zvmh8JA