So I swapped that laptop over to a 4K panel a while back, and selling off the leftover 2K screen would’ve been a losing deal. Better to just mod it into something. There’s no shortage of kits online for turning a laptop panel into a portable monitor, but my list of demands was a bit long. 2K (2560x1440) support HDR support USB-C single-cable Built-in battery would be nice As thin and light as possible Which all sounds like the kind of wishlist that never ships, so I settled for “however many of these I can actually get.”

My ThinkPad X1 Carbon 2017 has the top-spec WQHD screen, but the next generation, the ThinkPad X1 Carbon 2018, offered a WQHD HDR panel: 500 nits, glossy, and with a ridiculously wide color gamut. The catch, of course… that config only exists on the 2018. But the 2018 and 2017 share like 90% of the chassis, and a lot of parts have compatible FRUs—batteries, fans—so the screen should be swappable too. Nobody had tried it, until recently when good news finally showed up on 51nb. Someone on Taobao was already selling a panel labeled “B140QAN02.0,” and from what I could dig up that’s exactly the HDR panel from the X1 Carbon 2018. As for whether it fits the 2017 X1 Carbon, a guy on 51NB said it could be done. He was in Zhengzhou too, and when I asked he guaranteed a perfect swap—but wanted 830 yuan for the whole job. Since he was nearby he could come do it on-site, the whole process taking about half an hour, with a 350 yuan deposit up front.