The "original" XTEINK X4 (not pro) has a USB-C port - that's explicitly why I bought it. It looks like it is out of production now. The good news is they are a proven, very popular device (it's just an e-ink display glued to an ESP32 with good third party support) so this class of device should be available on AliExpress soon if not already.

I got the Xteink X4 Pro a few days ago. I was so convinced everything these days has a USB-C port, I didn't even check. Honestly it's the only downside of the device, I love everything else about it. Sure, it's small, but it's almost entirely an advantage for me. I don't even think about "should I take it with me?" - I just do, which means I read much more. The light is great for reading in bed. And CrossPoint is super solid (flashing took a minute).

I was disappointed by that too. I didn't think it would be hard to keep track of the pogo adapter for my x3, but I did end up losing it pretty quickly.

I really didn't want to buy the x4 pro, but I'm working on custom firmware for the x4 and I want to make sure it's compatible with the new device. Also, the lack of light was kind of annoying when I took the x4 on a camping trip. Not $100 worth annoying, but mildly annoying.