Don't buy it unless you know what you are doing.
It took 2 days and a lot of windows administration experience to install the updates.
SD card as storage expansion is limited (e.g. can store apps, but not OK for updates), I had to have a USB drive. Once all updates were done, the machine works reasonably and has about 10G free storage and 1G free ram.
If it's not doing much background work (e.g. not updating itself), performance is OK.
Storage is slow though (130mbytes/s and relatively low IOPS). Despite being flash based, windows was copying from it at 200 (small) files / second, comparable to spinning disks.
WIFI is fast (317Mbps down/253 Mbps up).
Keyboard is barely OK. There would be space for a proper sized keyboard, but instead you get a 1.6cm margin on both sides and small keys. Sometimes pressing the key doesn't register too, but I guess one could get used to typing on this.
It's also not heating up too much, although it can get warm, especially if closed (or in tablet mode).
Potential hardware problems:
Sadly, when having more than 0% brightness, the machine has a high pitch sound (pitch and volume depending on the brightness).
There's another HW issue: when windows update restarts, the computer doesn't boot up anymore. It needs a long (30s+) press of power button and then a shorter one to start it up, so you can't just leave it to update itself. Manual restarts are all fine.…more