Upgrading the RAM in 3rd Gen X1 Carbon (soldering experiment) : r/thinkpad
Laptop Lenovo Thinkpad X1 Carbon 2nd-gen Laptop Motherboard Cpu I5-4300 Ram:4g 12298-2 20a7 20a8 Fru:00up975 00hn765 Test Ok - Laptop Repair Components - AliExpress
Lenovo ThinkPad X1 Carbon UltraBook: Core i7-6600U | 256GB Opal2 SSD | 8GB | 14" Full HD (1920x1080) IPS | Windows 7 Professional 64-Bit / Windows 10 Pro Downgrade (20FB005WUS)
How to upgrade the SSD in Lenovo's ThinkPad X1 Carbon | Windows Central
Inside Lenovo ThinkPad X1 Carbon 7th Gen - disassembly and upgrade options | LaptopMedia.com
Lenovo ThinkPad X1 Carbon 6th Gen 2018 Disassembly and RAM, SSD upgrade options - Laptopmain.com