The HP Chromebook 11 G4 comes with a one-year warranty on parts and labor, one year of chat support and 90 days of phone support.For $69.99, you can purchase another year of phone support and remote problem diagnosis, as well as off-site support and free pickup and returns. See how HP fared in our Best and Worst Brands report and Tech Support Showdown.

Although some will be disappointed by the presence of a Broadwell processor rather than a Skylake one, we don’t think this is a significant drawback since most of Skylake’s improvements are aimed at laptop users with alleged benefits such as lengthier battery life and support for WiGig docking stations.

It is a shame there isn’t a dedicated graphics chip, but the integrated Iris Pro 6200 is more than sufficient for a lot of tasks. You’ll only really miss a dedicated graphics card if you frequently run 3D modelling and CADCAM programs or heavily GPU-accelerated applications.

While you can swap out the Core i5 chip for a 3.3GHz quad core Core i7 when ordering at a cost of £160, there’s no corresponding option for a dedicated graphics chip. This may be due to the thermal limitations of the compact metal casing. If you want a compact all-in-one Mac with dedicated graphics, then you’ll have to trade up to one of the larger and costlier 27in models.

We are disappointed to see that this iMac only comes with a 1TB hard drive as standard when Apple has been aggressively pushing SSDs across its various MacBook laptops. Even a basic Fusion Drive, which is Apple’s name for a hybrid drive where a hard drive is paired with a small SSD for caching, doesn’t come as standard costing an extra £80.

The 1TB hard drive hardly cripples performance, but there is a noticeable lag in in operations such as launching programs. On a Late 2012 iMac with a Fusion Drive where a 1TB hard drive is joined together with a 120GB SSD, programs open in a second or two. The same operation on the 4K iMac takes ten to 15 seconds.

It’s worth bearing in mind that the performance of current Fusion Drives might be slower than older ones as they now use smaller SSDs. The basic 1TB Fusion Drive that costs £80 extra, for example, now only has a 24GB SSD. We can’t say for certain until we’ve tested one, but we’d be surprised if there wasn’t some effect on responsiveness.

Input devices
People tend to either love or hate the keyboards and mice bundled with iMacs and Apple’s latest input devices are no less divisive. As before, a wireless keyboard and mouse are included by default but they’ve been redesigned.

Rechargeable, built-in lithium ion batteries take the place of the replaceable AA batteries of yesteryear. Both the keyboard and mouse are recharged through a USB port using an included Lightning cable. Cleverly, the Lightning cable also quickly pairs the Bluetooth-based input devices with the iMac obviating the need for the usual fiddly onscreen pairing keys.

Oddly, the Magic Mouse 2’s Lightning port is located on the underside of the mouse so you can’t use it while it’s charging as you can with the Magic Keyboard. Recharging is so quick that this isn’t a significant flaw, but it’s nonetheless surprisingly inelegant for an Apple product.The power switch and Lightning port are located on the rear of both the Magic Keyboard and Magic Trackpad 2

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Like the Surface Pro 4, the Surface Book ships with a pen for quick scribbles or serious Photoshop work, whatever takes your fancy.
I continue to be impressed with Windows Hello, the built-in infrared camera that lets you unlock the Surface Book just by looking at it. Try as I might, I just couldn't get Hello to fail to recognise me, no matter how bad the lighting, or the faces I pulled.

　On the software side, Windows 10 is Windows 10 — a well designed, mature and reliable OS in the traditional desktop setting. I ran into a few Surface Book specific bugs out of the box, but all were resolved with last Thursday's Windows 10 update. The lack of tablet friendly Windows 10 apps is still an issue, but not as noticeable in this laptop-first device.
In the laptop configuration, I easily got a full work day's use from the battery. The bulk of the battery lives in the keyboard, so when you're using just the screen in tablet mode, battery life drops to just three to four hours. That sounds pretty bad if you're hoping to use the tablet to watch movies on a plane, but remember you can flip the keyboard backwards and use it as a stand for the screen.

The question remains, is it better to have the one device that can do it all, or would owning both a lightweight laptop and tablet serve you better? The gorgeous Dell XPS 13 and Galaxy Tab S2 have a combined weight that's less than the Surface Book, and swapping between them can be just as easy with the help of cloud services like Dropbox, Office 365, or Google Docs.
I can see arguments for both — there are definite advantages to having just one device to charge, pack, and look after, but on the other hand, you can get better battery life and more flexibility splitting the products.

Either way, if you're as dedicated to the all-in-one idea as Microsoft is, this is simply the best tablet-laptop hybrid available. And even if you're not that keen on the idea, this is probably the best Windows laptop I've ever used.
The Surface Book is Microsoft's most compelling argument for an all-in-one laptop and tablet machine. By making it a laptop first with the option to be an occasional tablet, Microsoft have designed hardware that plays to the strengths of Windows, and strikes a better balance for most users.

　It’s wearing off, the dual shock of Microsoft building its own laptop and then the realization that it was not exactly a laptop. Now we’re left with the product of that surprise and minor deception: The Microsoft Surface Book. Put simply, it’s a very good premium laptop that is an occasionally unnerving mix of brilliance and pre-production hiccups.

I should back up a bit. Not everyone knows that Microsoft delivered its first-ever laptop and that it's actually a tablet with a detachable keyboard — and even that doesn’t explain it fully. Like its Surface Pro 3 cousin before it, Surface Book may sometimes look and work like a tablet, but it’s designed to live as an above-average-power laptop that also happens to have an ultra-high-res touchscreen and works with a dedicated Bluetooth pen.

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No one is saying Microsoft invented a new category. It’s more accurate to say the Surface Book is an evolutionary product in the convergence of tablet and ultra-portable design innovation. And much of the work Microsoft put into the design is a reflection of that effort. Easily the most notable element is Surface Book’s cutting edge Dynamic Fulcrum Hinge.

Surface Book is almost two devices in one. The screen portion is a full-blown Intel 6th-generation Core (Skylake) touchscreen PC, while the base houses the full-size keyboard and trackpad, and is also home to most of the laptop’s battery power and, in some models, a more powerful discrete Nvidia graphics processor.Microsoft built the screen like a tablet and, for the most part, the keyboard like a laptop keyboard. The marriage of the two shouldn't work, and yet it does, which is mostly due to the thoroughly unique and intensely clever dynamic hinge.

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