Keyboard incl. topcase DE (german) black/black with backlight and mouse-stick original suitable for Lenovo ThinkPad X1 Carbon 9th Gen (20XW/20XX) - sparepartworld.com
New For Lenovo PC HK Limited ThinkPad Helix Ultrabook Tablet Keyboard Base US Version TP00065K2 - AliExpress
SlimKeys ThinkPad Helix 2nd Gen Bluetooth Keyboard - with Backlight - Portable Keyboard w/ Convenient Back Light (Aluminum Keyboard) – BoxWave
UPDATED: Keyboard hinders Lenovo's Thinkpad Helix 2 — Surface Pro Artist
Lenovo ThinkPad Helix 2nd Gen Review | PCMag
keyboard for Lenovo ThinkPad Helix G2 2ND 20CG 20CH US Backlit with Frame - WIT Computers