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Showing posts with label Hardware Issues. Show all posts
Showing posts with label Hardware Issues. Show all posts

Wednesday, February 16, 2011

Wireless Access Point

Netgear Wireless Access Point


This powerful Netgear Prosafe 802.11G WG102 Wireless Access Point provides the industry standard access to home and corporate wired network resources, email and the Internet and includes support for MBSSID/VLANs, to enable more granular access to the network. Fully compatible with IEEE 802.11g, (2.4 GHz), it can also be set for dynamic 108 Mbps 802.11g.

With its robust security measures, simplified management and configuration, SNMP support, integrated IEEE 802.3af power over Ethernet (PoE), IntellilFi RF management technology and Wi-Fi certification, the WG102 brings standards-based enterprise-level functionality at a mid-market price.

The WG102 provides support for multiple Basic Service Set Identifiers (BSSID) and virtual LANs (VLANs). You can configure combination of VLANS and BSSIDS to provide stronger or less restrictive access to the network according to your requirements. For example visitors could be given wireless access for the Internet, but could be excluded from any access to the internal network.

WG102 with integrated IntelliFi radio frequency (RF) management technology, enables a wireless network to self-optimize by intelligently choosing channels and dynamically adjusting the power levels to ensure coverage and avoid interference. IntelliFi creates an additional level of privacy by providing self-organizing micro cells for enterprises. An additional level of security is added when used with NETGEAR’s IntelliFi-enabled client adapter, WAG511. In addition, the WG102 supports the ability to detect rogue access points and rogue stations.

USB Wireless Adapter

Linksys USB Wireless Adapter



Connect your USB-equipped desktop or notebook to a wireless network at incredible speeds with the Linksys WUSB54G USB Wireless Adapter. By incorporating two new, blazing fast technologies -- USB 2.0 and Wireless-G (802.11g) -- the Adapter delivers data rates up to 54Mbps (5 times as fast as 802.11b), without the trouble of opening up the case of your desktop computer.

To install, simply plug the Adapter into any available USB port. (It's compatible with both USB 1.1 and 2.0 ports, but 2.0 will yield the fastest speeds.) It gets its power through the USB connection, so no power cord is necessary. The included Setup Wizard walks you through configuring the Adapter to your wireless network settings, step by step. The Wireless-G USB Network Adapter is also compatible with the Wireless-B (802.11b) network standard, with data rates up to 11Mbps. And your wireless communications can be protected by industrial-strength Wi-Fi Protected Access (WPA) encryption, so your data stays safe.

Tuesday, February 15, 2011

Wireless PCMCIA Card


Linksys Wireless-N WPC300N Notebook Adapter


This WPC300N Wireless-N Notebook Adapter uses the very latest wireless networking technology, Wireless-N (draft 802.11n). By overlaying the signals of multiple radios, Wireless-N's "Multiple In, Multiple Out" (MIMO) technology multiplies the effective data rate. Unlike ordinary wireless networking technologies that are confused by signal reflections, MIMO actually uses these reflections to increase the range and reduce "dead spots" in the wireless coverage area. The robust signal travels farther, maintaining wireless connections up to 4 times farther than standard Wireless-G.

Friday, February 11, 2011

USB Wireless Adaptor

Netgear WG111 USB Wireless Adaptor



NETGEAR WG111 (WG111US) USB wireless adapter delivers consistent wireless access to your desktop, notebook or public WiFi hotspot, ensuring no more dropped connections or dead spots. The WG111 is a simple and secure way to share a broadband Internet connection. And, installation is fast and easy with NETGEAR’s Smart Wizard installation software. The WG111 is Standard 802.11g compliant and backwards compatible with 802.11g or 802.11b wireless routers.

Monday, February 7, 2011

Disassembling a Computer

5 Tips for Disassembling a Computer System



Disassembling a computer can be a painful task. If you're planning to slot in a new hardware component or want to look inside your PC, disassembly cannot be avoided.

Wednesday, January 26, 2011

Facts about Power supply connectors



   

     computer power supply connectors can be pretty confusing for the newbie when setting up a new PC.

Get these connections wrong, and you'll have some funny LED lights or behaviors in your PC. In this article, we'll take a look at power supply connectors so you have an idea of what they are and how they function.

1. Best Source Of Information

First up, what's the best source of information to learn about computer power supply connectors? It's definitely the motherboard manual. Most motherboard manuals have specific instructions on how to hook up the computer power supply connectors to the motherboard. Review the manual carefully to make sense of those connectors.



2. Types Of Power Supply Connectors

What are the types of computer power supply connectors, you ask? Well, here they are:

    * Power to hard disk drives There are connectors which power the hard disk drives - you hook these up directly to the power suppy unit using the power cables supplied.

      

    * Power to the CPU The CPU is powered by a power supply connector hooked up to the motherboard. This is usually a small little connector you need to be familiar with your motherboard manual to ascertain what connector this is.

      

    * Power to graphics card Most of the heavy duty graphics cards in PCs have a separate line to power them. The power supply connector to graphics cards might come from the power supply unit, or the motherboard.

      

    * Power to computer beeper Notice how your computer 'beeps' when you first boot it up? That beep sound is powered by a computer power supply connector. You usually hook that connector between the motherboard and the power supply unit.

      

    * Power to LEDs and lights Your computer case will have LEDs and lights to indicate activity in the computer (e.g. hard disk drive activity). To power these lights, there are some small power supply connectors between the power supply unit and the motherboard as shown below
      

   

    * Power to floppy and optical drives Your floppy or optical drives will need to be powered by computer power supply connectors. These are usually hooked up between the drive and the computer power supply unit.


3. Be Careful With The Power Supply Connectors

Whenever you're dealing with the computer power supply, please ensure that you've grounded yourself properly. Very often, I hear of motherboards being short-circuited simply because the user forgot to ground himself or herself before meddling with the computer power supply connectors.

Monday, January 24, 2011

Facts about Thermal grease

        
         The application of thermal grease between a CPU and its cooler is an important step in installing a CPU.

I know this process intimidates many beginners, but it is really simple. Here are some important facts you need to know about applying thermal grease.

Thermal grease application has long been the domain of hardcore computer enthusiasts. But recently, as more people build their own computers, it is becoming more commonplace.Applying thermal grease is important for cooling a CPU



1. Why Use Thermal Grease?

Do you know why we need to use thermal grease when installing CPUs on a motherboard? Well, the reason is simple. Most CPUs come with a cooler. The contact between the CPU and the cooler is not perfect. Hence, thermal grease needs to be applied to close off the contact between the CPU and the cooler.


2. Found in Many Kinds Of Packages

Thermal grease is available in many different forms. It all depends on the brand and quality of grease you are looking for.

3. Remove Original Thermal Grease

One of the most important steps to remember when applying thermal grease between your CPU and its cooler is to remove the original thermal grease. You see, the original CPU packaging may already come with some thermal grease on them. Make sure you remove it before you apply any new thermal grease.


4. Common Mistakes

There are 2 common mistakes I can think of when applying thermal grease. One of them is to apply too much. Using too much thermal grease endangers your system because it could leak out to other components and causes short circuits on the motherboard.

The other common mistake concerns processors with seals on them. When you buy a CPU, please make sure that there is no seal on it. Otherwise, when applying thermal grease, you will have a lot of difficulty.



Saturday, January 22, 2011

Reasons for Hard Disk Drive Failure



         If you've been using computers for any length of time, you should know that one of the most important parts of a PC is the hard drive.Now, it is critical that you understand this - the hard drive is one of the most delicate components in a PC and it can fail.

Friday, January 21, 2011

Connecting 5.1 Speakers


Have you ever wanted to experience surround sound from your PC speakers? If the answer is yes, then This article will show you how you can hook up 5.1 speakers to your current PC setup so you can enjoy computer sound from a whole new perspective.
             First, we need to understand the speaker system, then connect the cables and configure the proper options in your PC. So let's get started right away.

Thursday, January 20, 2011

Difference between PCI, AGP and PCI-Express cards

Do you know the difference between PCI, AGP and PCI-Express?  This article is an attempt to clear up this confusion. PCI and PCI-Express are by themselves not a video interconnects, but AGP is a pure video interconnect. Understanding the difference between PCI, AGP and PCI-Express will go a long way in your understanding of computer technology in general. 

Wednesday, January 19, 2011

Why Monitor goes Blank: Top 5 Reasons

    
          
          Computer monitor problems can be very hard to troubleshoot - I mean, if your monitor goes blank, how do you check anything on your screen. So that's why it's important to have 2 monitors in the house. Usually, if I have my desktop PC's monitor going blank, I'll immediately hook up the video card to another monitor. If the screen remains blank, then it could point to a video card problem. If the new monitor displays an image, then it's probably the first monitor that has run into problems.

Tuesday, January 18, 2011

How to power cycle your Computer

   
            "power cycle" means, a computer equipment can be rather finicky at times. A device that was working fine ten minutes ago may begin acting strangely or may not be responding at all. Often the low-tech solution of simply turning off the device and turning it back on again will fix the problem. This is because information stored in the device's RAM may have gotten corrupted and caused the device to hang up or stall on a certain instruction. Power cycling the device erases the RAM and allows it to boot up with fresh information. Typically it is a good idea to wait 5 to 10 seconds before turning the device back on to make sure it has chance to fully reset. Of course, if you need to power cycle your computer, you should save any work you currently have open, since it will be erased from the RAM once the system is restarted.

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