Reddit reviews Lenovo ThinkPad X230 Tablet 34352TU 12.5" LED Tablet PC - Core i7 i7-3520M 2.9GHz - Black
We found 2 Reddit comments about Lenovo ThinkPad X230 Tablet 34352TU 12.5" LED Tablet PC - Core i7 i7-3520M 2.9GHz - Black. Here are the top ones, ranked by their Reddit score.
Processor: Intel CoreTM i7-3520M Dual Core Processor (4M Cache, 2.90GHz - 3.6GHz) 35WRAM: 4GB (4GB x 1) DDR3 1600Mhz / Hard Drive: 500GB 7200rpm HDDOptical Disc Drive: DVD Super Multi Burner / Operating System: Windows 7 Professional x64bitManufacturer Warranty: 3 years warranty
It's the Lenovo Thinkpad x230, its actually only 4 years old:
http://www.amazon.com/Lenovo-ThinkPad-X230-Tablet-34352TU/dp/B008AZSNW4
Also @ /u/Gamersonly3d
The 1st generation Lenovo Thinkpad X1 Tablet seems to be mostly working out-of-the-box, and fits the requirements you've listed. I haven't had any personal experience with the device though, and have no idea whether the 2017 (2nd gen) iteration and (or the upcoming 2018 iteration) will be compatible or otherwise.
If you want something with more reports of favourable Linux compatability, there's also the Lenovo Thinkpad X230T, though that's an old model that leans closer to the 'convertible laptop' design (keyboard is attached, monitor swivels around). The ArchWiki and Linux Laptop wiki provide a decent amount of information regarding what works or doesn't work with the laptop (most of which is pretty much out-of-the-box, with a few features requiring specific packages). You can probably find a used X230T for cheap online.