A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.

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Wireless Internet inconsistently Slow

My brother in myself are both using the D-Link DWA-171 Dual Band USB Adapter with a router. The router does in fact support dual bands as well, so sometimes depending on which is faster you will see ...
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Using multiple Internet connections to Increase download Speed [closed]

I have 3 dongles, which I want to use simultaneously to get 3X the download AND upload speed. I will connect all the 3 dongles to my windows laptop, and an Ethernet cable runs from the laptop to a ...
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30 views

Does Wake-on-LAN (WoL) depend on the motherboard or the network card?

This question was spurred by discovering the Acer M670G seems not have an Wake-on-LAN (WoL) settings in the BIOS and in general, wondering whether WoL is controlled by the BIOS/NIC or the OS. One of ...
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Archer T4U adapter cannot Enable

I cannot enable my Archer T4U USB Adapter in my control panel. It will go to enabling then say its enabled, after that I can't even use it, it just say's its disabled. However, when I go into the ...
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22 views

Can't get jumbo frames enabled with Mellanox ConnectX-3 VPI card on FreeBSD 10.1

I have a Mellanox ConnectX-3 VPI card, MCX354A-FCBT, which is configured in 40Gbps Ethernet mode on both ports. It's connected via two passive DAC QSFP cables to an IBM switch. Everything works for ...
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15 views

Hyper-V - how to make network cards appear to Guest OS' as “the same”

Few days ago I transfered physical machine to virtual, so Windows detected a bunch of new hardware. After that I installed integration services, which made it again detect some more new hardware. I ...
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23 views

How can I share the Wireless connection across my LAN, and still access LAN locations

At the moment I have the following setup (all windows 8.1, router: BiPAC 7800N): Generally, 50-60% of the time, I use the router to connect to the internet (1.5mbs), but usually when working I ...
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17 views

No networks found upon returning to original location

The oddest thing is happening with my network connection. I can work on it fine at home, and then I bring it to school and it connects automatically to that network too. But then when I get back ...
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24 views

Gigabit NIC only connecting at 100Mbps

We have a desktop PC in a field office that only connects to the network at 100Mbps even though the GB card seems to be functioning perfectly. We have plugged in other machines into the same jack and ...
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18 views

Why my HostOnly adapter stopped working on my virtualbox guest and I cannot connect to it?

Basically my setup is: Windows 7 laptop with VirtualBox with Centos6 installed. I have 2 adapters enabled on guest: 1 NAT for internet access and 1 HostOnly to connect to this machine (for e.g. scp ...
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25 views

How do I prioritize one network interface over another, in the context of 'lower level' windows functions?

Alright so I think I'm at the right SE site... We'll find out in a minute; but my apologies if I'm not. Anyway... I have a couple of network interfaces on this system ( and a couple at my place of ...
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15 views

Virtual eth-adapter in networking-configuration

I have on my Debian en eth0-interface and I need the interface to listen to other IP's. I know I can create it with the following command ifconfig eth0:1 10.10.10.20/24 With this command everything ...
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1answer
40 views

Laptop's wifi only works if it's connected to mobile hotspot

my laptop started acted weirdly, it's wifi only works if i connect it to my mobiles hotspot, but it doesn't connect to any other type of wifi networks, tried many different locations, many different ...
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1answer
23 views

NIC MAC address is different than it should be

I have cheap Tenda W150M router that is working as a WLAN card in Client+AP mode. The router MAC Address and WLAN BSSID are xx:xx:xx:xx:xx:68(those are listed in the router admin page). Now on my main ...
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29 views

Trouble bridging two Ethernet connections on Ubuntu Server 12.04

My Setup: Dell PowerEdge 2800, Ubuntu Server 12.04, 2 Ethernet ports Dell XPS, Windows 7 Home Edition, 1 Ethernet port Router <--- eth0 ---> PowerEdge <--- eth1 ---> XPS the objective here ...
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35 views

In Windows 7 how to select network profile for internet access?

At our office, the ADSL modem broke down, so I enabled WiFi access point on my smartphone to connect to internet that way. It works, but only if I disable the regular LAN, i.e. disable the network ...
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33 views

How to verify that all the pins on a NIC card are indeed working?

I have a laptop here that had some bent pins on its NIC, my boss straightened them out, but there's still one pin that when I look at it, appears a little flat, like it won't touch the end of the ...
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27 views

Unable to connect to internet from Centos VM

I am using VirtualBox 4.3, I have installed Centos 6.3. I have two adapters attached. 1) NAT 2) Host-Only I want to be able to setup a cluster of 3 machines which can talk to each other and also be ...
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107 views

Windows 8.1 ethernet adapter properties are not properly saving

I have a wired network adapter installed on my laptop, it is a built in card and it works with no problems. The driver is installed and is the correct driver. I go into the network adapter properties ...
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17 views

Windows force different channels for multiple wireless NIC

I have multiple wireless NICs on my Windows 7 machine and want to load balance across them. They are set up with the same metric and streams are successfully split between them. However, the link ...
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1answer
30 views

How to use wi-fi / bluetooth as adaptapter on my PC(desktop)

I know the USB Tethering mode in android (Ya, I am talking about android as OS) but don't know how to use it to create a LAN to connect with my Laptop (For gaming and file transfer porpouse) So,I ...
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35 views

Where are PC's NIC settings saved (i.e. custom MAC or power management options)?

Recently i learned how to enable and use WoL, but some details about it's underlying mechanisms are still mystery for me. In this answer on serverfault was said, that WoL is OS independent ...
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1answer
366 views

OpenVPN does not connect VIA FrootVPN

Suddenly quit working... again... OpenVPN 2.3.6 (32 bit) Latest FrootVPN config file Windows 7 64 bit Port 1194 is open for UDP AND TCP I have been told to use 32 bit OpenVPN due to bugs, and it ...
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436 views

local area connection doesn't have a valid ip configuration

I get the following error after running diagnostic tool: local area connection doesn't have a valid ip configuration then I ran ipconfig \all in cmd and got the following: Microsoft Windows [Version ...
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29 views

How can I see which wifi channel is used by my laptop with Windows 8? [duplicate]

How can I see which wifi channel is used by my laptop with Windows 8 ?
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69 views

Windows 7 routing with single NIC

I have a PC with single NIC running windows 7. This PC is a member of 180.x.x.0/24 network and is internet accessible. Now, my brother brought another PC with single NIC. I want to make it also ...
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43 views

Server with 2 NICs

The server has a motherboard with built-in NIC that has 2 Ethernet ports. 1st labeled Management, 2nd isn't labeled anything. 2nd NIC is a PCI card plugged into the motherboard, which has 1 Ethernet ...
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1answer
21 views

Writing a script for a multi network student lab to change networks

I work in a university/college and having a problem in one of the labs. At the moment we have a few programs that pull their licences from a licence server. This licence server has no internet ...
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2answers
37 views

How can I do to my PC see its network adapter?

I have installed the Windows-7 on my computer. My PC doesn't see the wifi connections, because the Windows did not detect a properly installed network adapter. I entered the "Change adapter settings" ...
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1answer
191 views

Killer LAN e2200/Atheros AR8161 not running at Gigabit

I have ASRock Fatal1ty 990fx Killer that has the Atheros AR8161 NIC (branded as Killer LAN). I'm direct connecting to a Motorola SurfBoard 6141 with Cat5e cabling. My Windows 7 Professional is set to ...
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147 views

Two network drivers? (Broadcom Network Adapter, and Killer e2200 Controller)

This is making me very confused, I have an alienware laptop, and when I went to the Dell website to download drivers, I found a Broadcom Network Adapter/Bluetooth Combined driver, and a Killer e2200 ...
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83 views

Automatically connect WAN Miniport (SSTP) adapter at login

I have a WAN Miniport (SSTP) Adapter which I want to automatically connect when I log on. It authenticates using a certificate in the local users certificate store, no password required. When I ...
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35 views

Service Network Restart

I was configuring the network interface for the servers that are on Centos 6 platform. While editing the ifcfi-eth0 file there is a field "ONBOOT" which is set to "yes" if we want that the network ...
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26 views

Wifi problems - stops responding

I have problem with my WiFi. When I turn on my PC, everything is going fine, but in some time, My WiFi stops responding and connection is lost. After aprox. 1 minute is connection back, but it's ...
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1answer
36 views

What is the use of VmWare Virtual network adapters

I had VmWare Workstation for times ago and one day I noticed that my laptop is not going to shutdown or hibernate or sleep normally and it got stock turned on and with screen turned off which I had to ...
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41 views

Loopback vs NIC path

I'm trying to troubleshoot a complex problem in my computer running Windows 7. I won't describe the problem as it would take a very long time to explain. Basically I'm running a software that connect ...
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1answer
33 views

What is the effect of Service Network Restart

In network configuration file ifcfg-eth0 . There is a field "onboot" if I put onboot=no and restart the service network. Then interface eth0 did not up. If I put onboot=yes it does up the interface ...
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Network cycles to public/unidentified on Windows 7

I set my network to public and it worked fine for about 6 months, but now every few minutes my computer decides to change the network location to an unidentified public network (and loses internet) ...
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698 views

Use Genymotion/Andy without Host-Only Network Adapter?

Genymotion and Andy require Virtualbox Host-Only Network Adapter, however my computer is unable to install the driver correctly. Note that Android x86 works well with default NAT network settings. ...
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162 views

Change Network Type for Adaptor (Public vs Private)

I'm working on Windows 8.1 Professional. The machine is currently configured "Private" in a place that should be "Public". In its docs, Microsoft refers to this as "Public Mode" and "Private Mode" ...
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1answer
80 views

HP 6910p battery charging very slowly

My laptop battery charge rate is very slow. It charges between 50% - 100% in almost 4, 5 hours. It's running normal on AC adapter without any problem but running very slow on battery mode. So can one ...
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54 views

Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
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1answer
552 views

VirtualBox Network Adapter fails to install

The Host-Only Adapter fails to install in Windows 8.1 x64 with VirtualBox-4.3.20-96997. When VirtualBox is installed, Host-Only appears in the Device Manager as a failed device. Therefore ...
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107 views

Link speed says 1Gbps but is actually only 100Mbps

I've been transfering files across my network but seeing some things I don't understand. When I view my network adapter Link speed it states that it is 1Gbps but when viewing the network details in ...
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1answer
135 views

Windows 7 computer randomly loses IP configuration

Title says it all. I recently got a new computer with Windows 7 and it randomly loses its IP configuration. Its IP configuration is all valid and works properly after it boots, but it can randomly ...
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1answer
5k views

Optimal setting for advanced parameters for Realtek PCI-e GBE family network card

superusers. I am trying to get the best possible setting for my Realtek PCI-e GBE family controller network card so that when it will be literally minimal or zero lag when playing online game. ...
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22 views

How to identify which USB devices are mapped to what network interface names?

When I plug in an USB network, it gets assigned a network name, like wlan1 by udev. Is there a way how to determine the mapping, without going through udev files, like ...
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How to discover current modulation used by my wi-fi adapter on Windows

I would like to know which modulation of signal (16QAM, QPSK, etc..) is my wi-fi network adapter current using in Windows Is there a way to discovery it in Windows natively, or should I use a ...
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Is there a way to make a usb NIC show up in the wifi dropdown on a Macbook Pro 15?

I purchased a USB NIC (Alfa AWUS036AC) because the onboard NIC on my 2014 MBP 15 and my Netgear router don't play nice with each other. Is there a way I can make the networks it (the new NIC) sees ...
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53 views

Intel WLAN NIC works in Linux, undetected in Windows 7

Note: I do not have the hardware in question in front of me at the moment, so I'm sorry for the unavailability of some information. I understand if I can't get a proper answer because of that. ...