Realtek RTL81xx drivers -Teaming

http://www.opendrivers.com/download/driver-152700.html

Download Realtek RTL810X/RTL811X/RTL816X Driver Auto Installation 7.041 Windows 7(32/64-bit) from RealTek Network. In order to ensure the right driver download, Official driver links from RealTek are listed at first. If the official driver can not be downloaded, a copy of official driver can be provided at local server download.opendrivers.com, download1.opendrivers.com, or dl2.opendrivers.com. Besides, Both the driver developer's home page and driver download and support page be provided as well in my RealTek Driver Downloads page.

Official Driver Download:

Install_Win7_7041_03212011.zip download site1

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http://www.bing.com/search?q=Win7_7041&form=MOZSBR&pc=MOZI
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As One Teaming NIC for fail-over
You could use Realtek teaming utilize to create one teaming NIC.
Teaming NIC that has fail-over mechanism could keep connection when one NIC lost its connection.
Teaming NIC that has double bandwidth actually is a little help for normal user and sometimes bandwidth double need specific switch/hub.
It is recommended that normal user only uses fail-over for generic purpose. 
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How to Set Up Gigabyte Teaming

Many Gigabyte motherboards include two Ethernet ports, known as dual LAN, with teaming support. When teaming is enabled, the computer can connect to two separate networks and split its traffic between the two, taking advantage of each connection's bandwidth. Teaming also ensures that, if one network goes down or can't access the Internet, the computer automatically uses the other network, preventing any network downtime. Teaming is a feature of the built-in Realtek Ethernet adapter and is configured using Realtek's included utility.
INSTRUCTIONS
Insert the Gigabyte motherboard driver disc into your computer's disc drive.
Click the "Run Setup.exe" option that appears in the Windows AutoPlay pop-up.

Click "Application Software" at the left side of the Gigabyte window that appears, click "Install Application Software" at the top of the window, click the "Install" button under "Realtek Ethernet Diagnostic Utility" and install it by following the instructions on your screen.
Restart your computer by clicking "Start," clicking the arrow to the right of "Shut Down" and clicking "Restart."
Click "Start," "All Programs," "Realtek," "Diagnostic Utility" and "Realtek Ethernet Diagnostic Utility."
Click "Teaming" in the middle of the Realtek Ethernet Diagnostic Utility window and click the "Create Team" button.
Type a name for the team into the "Team Name" box.
Select the teaming mode your hub requires by clicking it in the "Teaming Mode" list. If you don't know, leave this option as the default "Link Aggregation\LACP (802.3ad)."
Click the checkboxes to the left of each Ethernet adapter in the list, and click "OK."
Tips & Warnings

• The team connection appears in the Windows network adapter list as a third connection using the "Realtek Virtual Miniport" driver.
• Disable teaming by clicking the name of the team in the Realtek Ethernet Diagnostic Utility window and clicking "Remove."

How Do I Team Two NIC Cards?

How to Enable Gigabyte Teaming

What Is Dual Gigabit Ethernet LAN?
How to Configure NIC Teaming for Windows 2003 Servers on a Dell

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http://realtek-ethernet-teaming-and-vlan-utility-for-windows-vista.updatestar.com/es/technical

Título:	Realtek Ethernet Teaming and VLAN Utility for Windows Vista
Requisitos:	Windows XP/Server 2003/Vista/Server 2008/7
Licencia:	Freeware

http://drivers.softpedia.com/downloadTag/Realtek+Teaming+Utility
tomshardware.com/forum/ ep45-realtek-teaming-utility-windows
Link aggregation ('teaming') seems to be supported for some Cisco 2950s; however, beyond that, it becomes complex... There are several kinds of aggregation; there are several kinds of 2950s with at least three kinds of firmware; there are a lot of 'known' problems with RealTek teaming and various switches - to research further I will at least need the actual part number of your particular 2950 (like: "2950G 24EI DC" ), as well as the firmware 'set' installed ("Standard Image", "Enhanced Image"?)..
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• MSI HQ Users-to-Users Forum 
• MSI Mainboards 
• Intel Core-iX boards 
• Dual Realtek Network Adapter Teaming