Printers are considered the top most essential devices in our daily work and daily lives. The work of the printer every single day is an important factor to keep up with written works and outputs. The rigid workload of printers will eventually cause several problems in the future.
Maybe you already have experienced getting your printers to repair and paying for printer technicians. Then it must have occurred to you that it is quite expensive and surely takes a lot of time to get it fixed. However, HP printer repair contract can make things time and money saving. In order to avail these contracts and HP repair agreements, search for a qualified and a trusted service provider.
The internet is the easiest access to HP printer repair contract. You can basically search the word and a series of service providers will be provided. Choosing which, on the other hand is another tricky part. The cost will definitely vary but the quality of service may not come hand-in-hand with cheap and affordable. Getting an HP printer agreement will need to be affordable and dependable as well.
It is much recommended to be completely meticulous in choosing a Printer Contract. The HP is a great company that has been establishing good relationships with consumers. When you are looking HP printer repair contract, then consulting one of the biggest established company will help you attain a good service with the most reasonable price. HP printer repair agreement is like your printer’s life insurance. We all know that problems will occur eventually and we ought to know that it is quite costly so availing an HP printer repair contract might come as handy as it can be.
The HP printer contract should always be evaluated properly; it is a vital factor to thoroughly read and evaluate everything that is included in the HP printer repair agreement like the parts and types of repair included. The cost should always be clear to, before availing a contract, a thorough clarification is a must between the client and the service provider. However, HP printer repair contract is well outlined and detailed so you can be worry free from any future problems that may occur.
Thursday, December 30, 2010
SMTP Proxy Server – An Ultimate Solution for the Spam Problem
The netizens are often bitten and bugged by 'spam messages', unauthorized emails and email worms. They get into the system and impede the process of mail delivery. The SMTP servers need to build up a strong line of defense to frustrate the infiltration of this nagging problem into your system. The solution is using the SMTP proxies. The main objective of using these servers is to make the mail servers be more active and efficient while handling email delivery. The proxy servers provide much-desired protection against the harmful worms that may corrupt your net system.
This SMTP proxy itself acts as a server between the email sender and recipient. It blocks the unwanted messages with help of multiple effective ways such as load balancing, filtering etc. Of several advantages offered by this server, the most important is providing connection management. This is done by putting an upper limit to the number of connection provided to the clients. The general rule is a client can have an access to only one connection which implies that only one message can be sent at a time. Such a rule has been applied to thwart the threat of the denial-of-service or DoS. A virus, enable of creating DoS problem, uses all the connection resources of a server. As a result, the clients are unable to have an access to that particular server. The SMTP proxy server solves this problem by restricting the number of connection.
Another important service that these proxy servers provide is bandwidth throttling. This is a clever technique to put an end to the invasion of the spam messages. The spammers generally send bulk of messages at a time. This may lead to server crash. To overcome this problem, the SMTP servers ( of course the proxy ones) limit the flow of traffic at a time. Due to this restriction, the legitimate senders wait untill they are able to send email again while the spammers abandon their effort. Load balancing is another vital service on offer by the SMTP server of proxy type. In today's world, where correspondence via net has become so much popular and essential too, one email server is not enough to manage the enormous emails exchanged day in and day out. The proxy server makes a logical division and creates multiple servers that handle the limited load assigned to them.
The SMTP proxy servers provide another interesting and important service – interoperability. With this feature, you are able to change the mail servers while still being attached to the same proxy server. What happens in this case that the internet service providers change their incoming and outgoing mail servers in response to your change but does not interfere with the proxy server. An SMTP mail server came into being to deal with the mail delivery. But with the passage of time, the spam attack has become a serious threat for the emails senders. They often encounter the 'spam' problem. So, a strong need was felt to filter out the spam messages. An effective way to sort out this problem is definitely using the SMTP proxies.
This SMTP proxy itself acts as a server between the email sender and recipient. It blocks the unwanted messages with help of multiple effective ways such as load balancing, filtering etc. Of several advantages offered by this server, the most important is providing connection management. This is done by putting an upper limit to the number of connection provided to the clients. The general rule is a client can have an access to only one connection which implies that only one message can be sent at a time. Such a rule has been applied to thwart the threat of the denial-of-service or DoS. A virus, enable of creating DoS problem, uses all the connection resources of a server. As a result, the clients are unable to have an access to that particular server. The SMTP proxy server solves this problem by restricting the number of connection.
Another important service that these proxy servers provide is bandwidth throttling. This is a clever technique to put an end to the invasion of the spam messages. The spammers generally send bulk of messages at a time. This may lead to server crash. To overcome this problem, the SMTP servers ( of course the proxy ones) limit the flow of traffic at a time. Due to this restriction, the legitimate senders wait untill they are able to send email again while the spammers abandon their effort. Load balancing is another vital service on offer by the SMTP server of proxy type. In today's world, where correspondence via net has become so much popular and essential too, one email server is not enough to manage the enormous emails exchanged day in and day out. The proxy server makes a logical division and creates multiple servers that handle the limited load assigned to them.
The SMTP proxy servers provide another interesting and important service – interoperability. With this feature, you are able to change the mail servers while still being attached to the same proxy server. What happens in this case that the internet service providers change their incoming and outgoing mail servers in response to your change but does not interfere with the proxy server. An SMTP mail server came into being to deal with the mail delivery. But with the passage of time, the spam attack has become a serious threat for the emails senders. They often encounter the 'spam' problem. So, a strong need was felt to filter out the spam messages. An effective way to sort out this problem is definitely using the SMTP proxies.
Sunday, December 26, 2010
Apple MacBook Pro 2.53GHz Intel Core i5 Silver Notebook Computer, Model MC372LLA
Apple MacBook Pro 2.53GHz Intel Core i5 Silver Notebook Computer, Model MC372LLA
Features:- Precision aluminum. The new gold standard.
Carved from a single block of aluminum, the MacBook Pro is a true engineering achievement. Its patented unibody enclosure is the product of precise machining. From the thumbscoop to the now-you-see-it-now-you-don’t sleep indicator, no detail is unaccounted for. The end result is a notebook that’s not only breakthrough, but thin, light, polished, and refined. The unibody also makes MacBook Pro more durable than ever. So you can throw it in your briefcase or messenger bag and pull it out at an airport, at school, at the office, or on location without a second thought. - The longest-lasting Mac notebook battery ever.
The new energy-efficient architecture in every MacBook Pro, along with automatic graphics switching in the 15- and 17-inch models, gives you dramatically longer battery life. On a single charge, the battery in the new 13-inch MacBook Pro lasts up to 10 hours (8 to 9 hours on the 15- and 17-inch MacBook Pro).1 And you’ll get up to 1000 full charge and discharge cycles — that’s nearly three times the lifespan of typical notebook batteries.2 Advanced chemistry and Adaptive Charging allow the battery to maintain charging capabilities longer and determine the optimal way to charge the battery’s cells. Because the battery lasts up to five years, MacBook Pro uses just one battery in the same time a typical notebook uses three. That makes for less waste. And that, in turn, makes for one environmentally friendly battery. - Powerful graphics, two ways.
MacBook Pro gives you more options for high-performance graphics, starting with the new NVIDIA GeForce 320M integrated graphics processor in the 13-inch model. It’s up to 80 percent faster than the previous generation and is even more energy-efficient for everyday tasks like writing email and surfing the web.3 - A display of brilliance.
Every MacBook Pro has a pristine LED-backlit display with wide-angle viewing and a color gamut usually seen only on a desktop display. So whether you’re watching a movie or making one, you’ve got the perfect canvas. The ultrathin, seamless glass enclosure makes the display strong and durable. And because it’s power efficient and free of mercury and arsenic, this display is greener than ever. Ready for something even more brilliant? The 15-inch model is now available with a high-resolution 1680-by-1050 glossy or antiglare screen that gives you 36 percent more pixels. - Even the keyboard is advanced.
The rigid aluminum keyboard webbing has been cut precisely to hold the keys. And the keys are curved to perfectly fit fingers. The result? Pure typing bliss. The keyboard is also illuminated, so when you’re in low-light settings, such as airplanes or conference rooms, you can always see what you’re typing. - It all just clicks.
The first thing you might notice — or not notice — about the MacBook Pro trackpad is the button. The entire trackpad is the button, so you can click anywhere. Without a separate button, the spacious trackpad gives your hands plenty of room to move on the large, silky glass surface. Use two fingers to scroll smoothly up and down a page with inertial scrolling. Pinch to zoom in and out. Rotate an image with your fingertips. Swipe with three fingers to flip through your photo libraries. Swipe with four fingers to show your desktop, view all open windows, or switch applications. If you’re coming from a right-click world, you can right-click with two fingers or configure a right-click area on the trackpad. The more you use the Multi-Touch trackpad, the more you’ll wonder what you ever did without it. - Everything fits.
Each MacBook Pro comes standard with a large hard drive offering up to 500GB of storage capacity,4 so there’s plenty of room for your photo libraries, video projects, and files. Or, for enhanced durability, you can order a solid-state drive with no moving parts. Choose 128GB, 256GB, or even 512GB. MacBook Pro also features ample high-speed 1066MHz DDR3 memory, with support for up to 8GB of RAM, so you can run more applications at once and quickly access your data and media. - Nothing but speed. And more speed.
The MacBook Pro lineup starts with advanced Intel Core 2 Duo processors running at up to 2.66GHz. And things only get faster from there. The 15- and 17-inch models now feature the latest Intel Core i5 and Core i7 processors — the fastest dual-core processors on the market — which reach Turbo Boost speeds up to 3.33GHz. With up to 3MB of shared L2 or L3 cache, MacBook Pro runs applications up to 50 percent faster than before.5 - Ports with possibilities.
The 15-inch MacBook Pro is iPod, iPhone, digital camera, and external hard drive ready. If it has a cable, there’s a place for it. You’ll find two USB 2.0 ports and a FireWire 800 port for connecting faster peripherals. - Mini DisplayPort.
The Mini DisplayPort delivers a pure digital connection to external displays — even large 30-inch displays — quickly and easily. It gives you plug-and-play performance with the Apple LED Cinema Display and supports VGA and DVI, as well as the latest multimedia standards such as DisplayPort and HDMI.6 - From camera to computer.
In an instant.
Transfer your photos and videos to and from your MacBook Pro just as fast as you’re able to take them. Built into the 15-inch MacBook Pro is an SD card slot, so you can edit and share your photos and digital video on the spot. - Your studio to go.
With the latest 802.11n wireless technology built into MacBook Pro, you’re always seamlessly and effortlessly connected to the wireless world out there, at home, and at work.7 MacBook Pro automatically finds available networks and allows you to join them with just one click. Bluetooth wireless technology is also built in, so brilliant accessories can become your wireless accomplices. With a built-in battery that lasts longer than ever before, you can do everything you need to do, where you need to do it. - Burn DVDs superfast.
After editing and applying the finishing touches to your home movie masterpiece in iMovie and iDVD, use the ultrafast 8x SuperDrive on your MacBook Pro to burn it to DVD. And because the SuperDrive also writes to double-layer discs (DVDs with nearly 9GB of space), it’s great for backing up data. - Be everywhere at once.
Cleverly integrated — almost hidden — at the top of the MacBook Pro display is an iSight camera. Use it with iChat, and you can be anywhere without actually being there. Video chat with up to three of your friends, share a video with a colleague, or present to a client.8 Use iSight with Photo Booth for fun photo effects. And there’s no need to waste valuable primping time installing software or configuring the camera. Like everything Mac, iSight just works.
Connections and Expansion
- MagSafe power port
- Gigabit Ethernet port
- One FireWire 800 port (up to 800 Mbps)
- Mini DisplayPort
- Two USB 2.0 ports (up to 480 Mbps)
- SD card slot
- Audio in/out
- Kensington lock slot
- AirPort Extreme Wi-Fi wireless networking2 (based on IEEE 802.11n specification); IEEE 802.11a/b/g compatible
- Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology
- 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
- Stereo speakers with subwoofers
- Omnidirectional microphone (located under left speaker grille)
- Audio line in minijack (digital/analog)
- Audio line out/headphone minijack (digital/analog)
- Support for Apple iPhone headset with microphone
- 15.4-inch (diagonal) LED-backlit glossy widescreen display with support for millions of colors
- Supported resolutions: 1440 by 900 (native), 1280 by 800, 1152 by 720, 1024 by 640, and 800 by 500 pixels at 16:10 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio stretched; 720 by 480 pixels at 3:2 aspect ratio; 720 by 480 pixels at 3:2 aspect ratio stretched
- Optional 15.4-inch (diagonal) LED-backlit widescreen display with 1680 by 1050 pixels (glossy or antiglare)
- NVIDIA GeForce GT 330M graphics processor with 256MB of GDDR3 memory on 2.4GHz and 2.53GHz configurations; or 512MB of GDDR3 memory on 2.66GHz configuration
- Intel HD Graphics with 256MB of DDR3 SDRAM shared with main memory5
- Automatic graphics switching
- Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on an external display, both at millions of colors
- iSight camera
- Mini DisplayPort
- Pure digital video output
- DVI output using Mini DisplayPort to DVI Adapter (optional)
- VGA output using Mini DisplayPort to VGA Adapter (optional)
- Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter supports 30-inch Apple Cinema HD Display (optional)
- HDMI output using Mini DisplayPort to HDMI Adapter
- Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement)
- Multi-Touch trackpad for precise cursor control; supports inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities
- 2.4GHz or 2.53GHz Intel Core i5 processor with 3MB shared L3 cache
- 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 memory; two SO-DIMM slots support up to 8GB
- 320GB or 500GB 5400-rpm Serial ATA hard drive; optional 500GB 7200-rpm hard drive, or 128GB, 256GB, or 512GB solid-state drive6
- 8x slot-loading SuperDrive (DVD±R DL/DVD±RW/CD-RW)
- Maximum write: 8x DVD-R, DVD+R; 4x DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD-R; 10x CD-RW
- Maximum read: 8x DVD-R, DVD+R, DVD-ROM; 6x DVD-ROM (double layer DVD-9), DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD
- Built-in 77.5-watt-hour lithium-polymer battery
- 85W MagSafe Power Adapter with cable management system
- MagSafe power port
- up to 8-9 hrs wireless productivity
- Line voltage: 100V to 240V AC
- Frequency: 50Hz to 60Hz
- Operating temperature: 50° to 95° F
(10° to 35° C) - Storage temperature: -13° to 113° F
(-24° to 45° C) - Relative humidity: 0% to 90% noncondensing
- Maximum operating altitude: 10,000 feet
- Maximum storage altitude: 15,000 feet
- Maximum shipping altitude: 35,000 feet
- Mac OS X v10.6 Snow Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools)
- iLife (includes iPhoto, iMovie, iDVD, iWeb, GarageBand)
- MacBook Pro
- Display cleaning cloth
- 85W MagSafe Power Adapter, AC wall plug, and power cord
- Software DVDs
- Printed and electronic documentation
- Highly recyclable aluminum and glass enclosure
- Mercury-free LED-backlit display
- Arsenic-free display glass
- BFR-free
- PVC-free3
- Reduced packaging volume
- Meets ENERGY STAR Version 5.0 requirements
- Rated EPEAT Gold4
- Height: 0.95"
- Width: 14.35"
- Depth: 9.82"
- Unit: 5.6 lbs
- Shipping: 11 lbs
- Manufacturer Warranty(authorized online retailer): 1 Year Parts and Labor with 90 Days Phone Support
New Acer Aspire 5742
Following are the Technical Specification of Acer Aspire 5742 Laptop in India:-
- Processor : Intel Core i3 370M, 2.4Ghz, 3MB L3 Cache
- Operating System : Linux / Windows 7 Home Basic
- Memory : 2GB DDR3 SDRAM – 1066 MHz – PC3-8500, Upto 8GB
- Chipset : Intel HM55 Express Chipset
- Hard Disk : 500GB SATA @ 5400RPM
- Optical Drive : DVD+RW/+R Writer
- Display Screen : 15.6-inch HD widescreen display ,1366 x 768 resolution
- Graphic Card : Intel Graphics Media Accelerator HD (Intel GMA)
- Wireless LAN 802.11 b/g/n
- Bluetooth
- Web Camera
- HDMI Port
- USB Port : 3
- Ethernet LAN
- High Definition Audio
- Dolby Digital Audio Speakers
- 6 – Cell Battery
- 1 Year On Site Warranty
- Weight : 2.6 kg with 6-cell battery pack
- Colors : Black,Red,and Brown
AFFORDABLE NEW LAPTOP
I realize that “cheap” is in the eye of the beholder. Not only that — the laptops in this article might not even be as cheap as something you could get off eBay or even as inexpensive as a refurbished laptop.
But, face it: new laptops are almost always going to be more expensive than the equivalently configured desktop PC because of the need for miniaturization of the components. And laptops have to use different (more expensive) technologies to maximize battery life.Bottom line: you’re going to pay more for a laptop; or you’re going to get less laptop for your dollar compared to a desktop PC.
That said, these three laptops — Sony VAIO, HP Pavilion, and Dell Latitude — are all solid buys in a range of prices that is very competitive for brand new equipment. And they come from decent companies and offer you a range of features as well.
Let’s get started…
Sony VAIO N170GT
The nice thing about this Sony model is that it doesn’t have a lot of junky frills on it. It is a clean looking design that is stylish, too. The screen is very bright, yet you don’t get a lot of glare. The speed and performance is okay — nothing to brag about, but for the price it’s not bad. The battery is good for probably around four hours. That’s enough to watch a movie if you’re on a plane flight, but again — nothing to write home about.
On the downside, this laptop uses an older Intel Core Duo processor. This processor comes with integrated graphics, which means that the performance is not to be that great. But again, you’re not paying a lot of money, relatively speaking, or this laptop. If you’re going to install Windows Vista on this machine you’re going to want to upgrade the memory.
Overall, this model of Sony’s VAIO gives you a good price, but doesn’t give you a really powerful processor. But the laptop looks great and it’s very stylish and attractive. If looks count and you want to save some bucks, this is a great machine. Brand-new, out-of-the-box this model will set you back about $1100 plus tax and shipping.
HP Pavilion dv6205us
This laptop is part of the HP Pavilion DV6000 series, and it is designed to appeal to the mass market. It is a very stylish laptop with a shiny finish — designed to appeal to the same customers who might consider a Sony or an Apple laptop. It’s got a series of high-end components and multimedia features at a price that’s lower than the comparable Dell laptop.
For example, this laptop has some pretty nice stereo speakers from Altec Lansing. They’re located above the controls. But be aware that if you close the top the sound gets can get muffled. This laptop also has a 1.3 megapixel WebCam built right in, as well as two microphones. There is a row of buttons above the keyboard that launches different features like the media player, volume-control and playback. The keys look nice, but they make a really annoying beeping sound when you press them (and you can’t really turn that off either).
This laptop weighs a little over 6 pounds, which makes it lighter than the comparable Dell laptop. When you add the AC adapter it brings the whole thing up to a little over 7 pounds.
The screen is 15.4 inches wide, with a kind of a shiny finish that makes colors very bright and vibrant, although it gives the appearance a bit of a glare in bright sunlight or next to a window.
The keyboard is very comfortable. The touchpad has an on-off button. This is very cool because it keeps your cursor from flying off in the wrong direction if your hand passes over the touchpad while using an external mouse. This laptop has a decent number of ports including a FireWire port, a VGA port, S-video and 3 USB 2.0 ports. You also get a microphone jack and two headphone jacks.
As far as processors go, you have a couple of choices. You can do a 1.86 GHz Celeron or a 2.0 GHz Core Duo. This laptop can be configured for up to 2 GB of RAM, and it’ll work with hard drives of up to 200 GB in capacity.
Bottom line: it’s got lots of entertainment features, you can configure it lots of different ways and it is very affordable. Brand-new out-of-the-box, you can get one for as little as $600-$800 plus tax and shipping.
Dell Latitude D600
The D series laptops from Dell use the Pentium M which comes in 1.3GHz, 1.4GHz, and 1.6GHz speeds–all paired with Intel’s new 855PM chipset. You can this laptop with between 128MB - 2GB of fast 266MHz DDR SDRAM. It also comes with a faster 40GB hard drive, or a choice of 20GB, 30GB, and 60GB drives running at slower speed.
It’s got a 32MB ATI Mobility Radeon 9000 graphics chip. There are a number of swappable modules for the single internal bay, including CD, DVD, CD-RW, DVD/CD-RW, floppy, a second hard drive, or a second battery.
The average-sized, 14.1-inch screen isn’t super. But it comes with a pretty good 1,400×1,050 native resolution. (You can also save a few bucks by opting for the 1,024×768 display instead.)
It’s very fast, and it includes an integrated wireless antenna that is of the dual-band type. This means that if you are within range of a Wi-Fi hotspot that runs either “b” or “g” wireless protocols, this laptop will be compatible with either protocol. It also has built-in Bluetooth.
On the downside, this laptop is part of the D-series notebooks for Dell which means it will not be compatible with C-series Dell laptops. This means that if you have a C-series docking station, you’re out of luck. And if you have media modules that are for another C-series notebook you’ll have the same limitation.
Overall, this is a very thin and light notebook computer at a fantastic price — $400, plus tax and shipping
.................. .Aditya
Acer Aspire One 522
Acer Aspire One 522 Technical Specifications:
- Genuine Windows 7 Operating System
- AMD Fusion Dual Core CPU (1 GHz)
- Built-in AMD Radeon HD 6250 graphics
- 2GB DDR3 RAM
- 320GB Hard Disk
- Wi-Fi 802.11 b/g/n
- Bluetooth
- Webcam with Microphone
- HDMI, VGA, USB Connectors
- 10/100 Mbps LAN
- Memory Card Reader
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