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This could be down to a faulty driver, or the adapter cable not being designed to let the device pull too much current. Either way, it's a headache.
Similarly, the lack of a memory card slot will be an understandable deal-breaker for some of you. Not all of us are ready for the connectivity-lite future yet.
The theoretical capability of the ports is sound, though. One doubles as the power socket, and the other two have Thunderbolt 3.0 support, whose bandwidth is a still-amazing 40Gbps.
Whether you love or hate the use of USB-C, the HP Spectre 13 does at least soundly beat the MacBook, which has a single Thunderbolt port, also used to charge the battery.

The connectivity may put off a lot of traditional laptop buyers, but in other areas the HP Spectre 13 is absolutely made for this audience. Namely, it has a nicely-spaced full-size keyboard and a trackpad that doesn't feel too cut-down to fit the frame in use.
Being ultra-slim and light while still offering these computer staples is the Spectre 13's whole reason to exist. We're happy to report the HP Spectre 13 hasn't suffered from any of the keyboard torture Apple subjects some of its models to. This is a classic chiclet keyboard with surprisingly good key travel for a laptop this thin. Key-press feedback is crisp, with a much more satisfying response than you'll get from the ultra-flat MacBook 12in or the slightly hollow in-situ feel of the Microsoft Surface keyboard. It's a proper laptop keyboard, in other words.

See also: Lenovo Yoga 300 11.6 review
The allure of the Yoga 11 710 is that it has this level of portability, and a high-end design, without a price anywhere near £1000. Build quality appears to be one of the main improvements since the Yoga 700, which went on sale at the beginning of 2016.
Like other Yoga models, the 710 has a hinge that flips all the way around, turning it into a thick, heavy tablet. It won't compare too well with an iPad or dedicated Android tablet, but this setup can be useful when a normal tablet isn't.
It'll let you prop the tablet up in bed, let you read an article easily while you cook without the keyboard getting in the way, and will keep the screen upright on a tiny table. You'd need a folio case to get the same effect with a normal tablet, and it may well feel a lot flimsier. Each kind of hybrid has a distinct appeal, and 360-degree hinge style of the Lenovo Yoga 11 710 leaves you with a device that still absolutely feels like a laptop. Other hybrids often struggle with weight balance because their brains and at least part of their battery needs to fit in the screen.

The Lenovo Yoga 710 is part of the new band of laptops with limited physical connections, but we're glad to see it hasn't ditched traditional USBs altogether in favour of USB-C ports like some new models.
There's one USB 3.0 socket on the right edge, next to a microHDMI connector. Aside from the headphone jack on the other edge, that's your lot.
Using a single USB in an ultraportable like this is an understandable, if unfortunate, decision, but the lack of a memory card slot is disappointing. It makes the machine harder to get on with for anyone who works with a camera. You could carry around a USB card reader, of course, but that dilutes the convenience of this otherwise extremely nifty little laptop.
To a large extent the microHDMI makes up for the lack of a Thunderbolt port, although with a great many laptops over £500 now embracing USB-C, the Yoga 11 710's connectors are going to look a little dated quite soon.

A keyboard backlight makes typing in the dark much easier too, although unlike some other parts of the hardware it's totally conventional. It's either on or off, no gradations, and isn't super-bright.
Compared to some larger models what it lacks slightly is some give after the initial key depress. This leads to the keys feeling slightly light mid-typing. However, we're getting into real keyboard navel-gazing territory now.
The HP Spectre 13's trackpad is very good too, for a number of reasons. As you'd hope at the price, it uses a textured glass surface for a totally non-tacky feel. Its shape is sensible too. Looking at it, the pad may appear a little 'squashed', vertically. And it is. However, it's something we've only noticed while gaming. There's plenty of space for comfortable general use. Driver support is unusually good too. The HP Spectre 13 pad is unusually well-behaved among windows laptops. Where the last touch of style comes in is the click feedback. HP has got this just right. It's virtually silent, doesn't require too much force and still provides a great feel.
This is not as common as you might think. That's right, while Apple has blazed ahead with a pressure-sensitive trackpad, some other manufacturers still struggle to make a standard pad that feels like it doesn't hate you.

The Spectre 13 has a 13.3-inch screen. This is our preferred Windows laptop size for a machine intended for 'proper' work on-the-go. You get enough screen space to do justice to complex applications, without the bulk of a 15.6-inch laptop.
It's a 1080p IPS LCD screen that, as mentioned earlier, does not use a touch layer. You'll be using the trackpad 24/7 with this laptop.
A lot of our favourite portable Windows laptops of recent times use matt screens, but in keeping with the glitzy design, the Spectre 13 has a more trendy glossy finish. This means, like a MacBook, it picks up an awful lot of reflections when used outdoors or near a window.

The screen backlight has the brightness needed to compete, though, going up to 365cd/m. We've used the Spectre 13 outdoors on a number of occasions, although we did need to ramp up the brightness much higher than we might with a matt-screen machine. HP has aimed for the sRGB colour standard with the Spectre 13, which is what gets you natural-looking rather than oversatured colours. It hits a respectable 90 per cent of the sRGB spectrum and 65 per cent of Adobe RGB.
Native contrast is good for an LCD too, at 1300:1.
At the price you can find laptops with even higher resolutions, and deeper colour, but this display is uniformly good or very good in all respects. One of the most curious parts of the HP Spectre 13 is how it defies expectations with its CPU. In a laptop this thin, we'd expect to see an Intel Core M series chipset. They're tiny, can get by with passive cooling, and offer enough power for general productivity use.
The HP Spectre 13 has an Intel Core i7-6500U. This is still part of Intel's low-voltage range of CPUs, but has access to a few more gears than a Core M chipset.

Matched with 8GB RAM and fast all-SSD storage, the Spectre 13 feels very fast in day-to-day use. Quite how different an experience this is to using any system with a hard drive is a rather sad indictment of Windows 10.
This is still not a workhorse you'd want to replace a recent desktop PC with, but only really because the CPU only has two cores. The limits of its abilities aren't as restrictive as a Core M laptop.
For example, the HP Spectre 13 can just-about handle recent games just a few years old, if you're willing to really pare back the settings. In our usual Thief 720p “low” test benchmark, the laptop managed a just-playable average 23.8fps. Granted, that’s not playable in everyone’s book.

In Alien: Isolation it achieved 37fps average at 720p resolution, low settings. That's a very playable speed. Both tests fell apart as soon as the resolution and visuals were increased, of course, but this is better than you get from most other devices this thin.
It is a shame there's no Intel i7-6650U version of the Spectre 13, though. That CPU uses Intel Iris graphics rather than the bog-standard HD 520 chipset used here. You get get it in the Surface Pro 4, suggesting fitting it in would not be impossible.
Using an Intel i7-6500U also means the Spectre 13 can handle video and photo editing fairly well, although for any professionals out there, we'd only suggest using a machine like this as a backup. You'll want a non-low-voltage quad-core CPU for that sort of work. In Geekbench the Spectre 13 scores 6894 points, and 2735 in PC Mark 8. This is almost exactly what we saw in the Asus UX303U, which uses the same CPU.
HP has used a decent SSD here too. It can read at 1589MB/s, and writes at 578MB/s.
One of the costs of using an Intel Core i7 rather than an ultra-low power Core M CPU is that the Spectre 13 needs to use fans. It can't get by with a heatsink alone. A light-noise fan runs whenever the laptop is used, while another kicks in whenever the laptop is put remotely under strain.