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Lenovo 42T4757 laptop battery

The 64GB SSD can be doubled, I believe, but at a price.Toshiba has produced the lighter, cheaper, higher memory machine, but for those who value build quality and durability, the Lenovo will probably be preferred.SSD Solid-State Drive. A hard 'disk drive' that isn't a drive at all. Without platters, styli, heads and other moving parts, SSDs use less power, read and write data more quickly, and generate less heat than conventional hard drives. At the moment they're dearer, but look out for future generations of 'Nand' and 'Dram' flash memory that will supersede the HD as surely as it superseded Winchester drives and floppies.The revelation that top secret documents relating to al-Qaida and Iraq were left on a train is the latest in a string of recent embarrassments over data security lapses.In March, it was disclosed that more than 1,000 government computers had been lost or stolen in recent years. The Ministry of Defence was the worst offender, with 503 laptops or PCs missing in the past decade.On January 19 this year, it emerged that a Royal Navy officer's laptop containing the details of 600,000 people had been stolen. The computer was taken on January 9 in Birmingham and reported the following morning.

It contained personal information from people who had signed up or applied to join the Royal Navy, Royal Marines and Royal Air Force.The defence secretary, Des Browne, later told the Commons that an investigation into its loss uncovered two similar thefts since 2005.On December 17, the transport secretary, Ruth Kelly, announced that names, addresses and phone numbers of 3 million candidates for the driving theory test had gone missing.They were among details on a computer hard drive which went missing in the US in May last year. The hard drive belonged to a contractor working for the Driving Standards Agency.On December 11, the Department of the Environment revealed that two computer discs containing the names and addresses of 7,685 Northern Ireland motorists had disappeared at a sorting centre in Coventry.The information was not encrypted. The material had been sent from Northern Ireland Driver and Vehicle Agency in Coleraine, Co Londonderry, and the Driver and Vehicle Licensing Agency in Swansea.

On November 20, the chancellor, Alistair Darling, admitted to MPs that computer discs holding personal information on 25 million people and 7.2 million families had gone missing.The details included names, addresses, dates of birth, child benefit numbers, national insurance numbers and bank or building society account details.Despite numerous investigations and repeated pledges to tighten procedures, such data lapses have been common over the years.In 2004, sensitive papers detailing security arrangements for Heathrow were found near the perimeter and handed to the Sun newspaper.In 2002, confidential documents detailing protection arrangements for the then home secretary, David Blunkett, were found outside a pub.In 2000, a MI6 laptop was mislaid after a secret service official went on a drinking session at a London tapas bar.Less than a month earlier a MI5 laptop containing classified information on Northern Ireland was stolen at Paddington station and in May that year, another laptop was stolen at the same station. It contained details on the biggest ever military procurement project.I have recently found that adding an external screen to my work laptop has really helped with productivity, but having visited a colleague who had two additional monitors,

I now want that too. His laptop had two HDMI outputs so the setup was simple, but mine only has one. What’s the cheapest way for me to do this without changing my laptop? SimonAny Windows laptop will support two screens – at least, I’ve never heard of one that won’t. Supporting three screens can be just as easy, or much trickier. It depends on the laptop, the graphics card (or integrated graphics), the graphics drivers, and perhaps the amount of memory available. There’s no easy way to tell in advance. However, if you search online for your exact laptop, you may find that someone has already tried it, and this is probably the best guidance you can get.Some laptops will support two external monitors if you can find a way of plugging them in. For example, you could plug one into an HDMI port and the second into a VGA port. This is not quite as good as using two HDMI ports because HDMI and VGA are different video standards. The two screens may have slightly different colour renderings, or other differences (brightness, contrast etc), which could be annoying.Alternatively, if your laptop has a DisplayPort or Mini DisplayPort, you can buy a splitter or multi-monitor hub that will drive two or three screens. These are usually used to “clone” screens, but Windows should be able to set up an extended desktop that bridges two or more screens.If your laptop only has one video port, you can use a USB display adaptor instead. Amazon searches find lots of examples, none of which I’ve ever used. From a position of ignorance, I looked for better-known brands such as Plugable, Kensington and Climax Digital, but readers with experience of multi-monitor laptops are welcome to suggest alternatives below.I expect you will need an adaptor that includes an external graphics card. One example is the Plugable UGA USB 2.0 to DVI/VGA/HDMI Adaptor, which costs £37.95.

(Although the spec says it supports Windows and Linux, it is clear from the Amazon comments than Mac OS X owners are also using it.) Alternatives include the ClimaxDigital USB 3.0/2.0 to DVI, VGA or HDMI Adaptor (£29.99), the Plugable USB 2.0 to VGA/DVI/HDMI Video Graphics Adaptor Card (£42.95) and the Kensington Universal Multi-Display Adaptor (£65.99). You need one adaptor per USB monitor.Although an external graphics card will usually solve the three-screens problem, there may be limitations. The bulk of the work is still done by the laptop’s processor, which can mean that everything else slows down. The extra screen may not be fast enough for gaming, but it should be fine for normal office purposes, such as email or news feeds.You will generally get better results with USB 3 adaptors, because USB 3 is about ten times faster than USB 2. However, it shouldn’t make much, if any, visible difference if you’re only driving one extra screen – see some of the YouTube demos mentioned below.You don’t say whether you move your laptop around, though I assume you do. If you don’t, it’s a very bad idea to use a laptop for work. You should replace it with a desktop PC, which provides more power for less money, is easier to expand or repair, and – most important of all – has much better ergonomics. With a standard laptop, it is impossible get both the screen and the keyboard in their optimum ergonomic positions without adding either a separate keyboard or a separate screen.The other problem with connecting multiple screens to a laptop is that you have to unplug them all when you take the laptop out of the office, and plug them all back in when you return.

The solution is to use a docking station or a USB hub. For ergonomic reasons, I’d recommend plugging an external keyboard and mouse into the hub, as well as your two screens. That way, you will only have to plug one USB cable into your laptop to make everything work.For example, you could buy a Plugable UD-3900 USB 3.0 SuperSpeed Universal Docking Station (£99.95), and use two external monitors via its two video ports: HDMI and DVI/VGA. Your laptop would provide the third screen. The UD-3900 is a USB 3 hub, but it will work with USB 2 ports on Windows laptops and tablets; it just won’t be as quick.This particular range seems to be popular with Microsoft Surface Pro owners (which is how I know about it), but there are no doubt many alternatives.Plugable has a short YouTube video that shows an 8in Windows tablet – a Dell Venue 8 Pro, which only has a microUSB 2 port – working as a desktop PC with four monitors, an external keyboard and mouse. This demo uses a Plugable UD-3000 hub.Plugable’s founder Bernie Thompson has also produced YouTube videos showing a multi-port USB 3.0 hub running seven monitors from a Windows 7 laptop and, more recently, running 14 monitors from one tiny Windows 8.1 PC, a Core i3-based Intel NUC.

The increase came from changes in the DisplayLink technology used by Plugable and other suppliers, not from any changes in Windows.A hub is obviously not the cheapest option, in hardware terms. However, it is a lot cheaper than a course of physiotherapy. And, sad to say, I have had more than one experience of that.Thousands of men across the country will be crossing their legs and groaning in despair today when they learn that their trusted friend, the laptop computer, has become the latest threat to their manhood. Just months after they were warned that carrying mobile phones in their pockets might damage their sperm count, men now have to absorb the news that laptops can similarly threaten their fertility.Under the title Increase in scrotal temperature in laptop computer users, researchers today reveal in the journal Human Reproduction that a combination of the heat generated by the computers and the position of the thighs needed to balance the machines leads to higher temperatures around men's genitals.

Yefim Sheynkin, who led the research team from the State University of New York at Stonybrook, said it was possible that years of heavy laptop use may cause irreversible or partially reversible changes in male reproductive function.Until there was further research, teenage boys and young men might want to limit the use of computers on their laps, he said.Past studies have suggested higher scrotal temperatures can damage sperm and affect fertility. Pesticides, smoking, obesity, prolonged car driving and tight trousers had all been blamed for diminishing male potency while the mobile phone theory was suggested by Hungarian scientists this summer.Dr Sheynkin said, however, that except for an anecdotal report of genital burns, the effect of portable computers on scrotal temperature had not been known.


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