Fully working Clover EFI setup for Mojave on the ThinkPad x230
Setup is easy, just replace the stock EFI folder with this one
This card does not require you to flash your BIOS.
Latest link: https://www.aliexpress.com/item/32841726254.html?spm=a2g0o.productlist.0.0.32e97c51X6YtgF&algo_pvid=0589832f-3229-4ce0-9598-cd6ed03d13fe&algo_expid=0589832f-3229-4ce0-9598-cd6ed03d13fe-0&btsid=b3521a7d-d01f-49da-954e-576a55b14da4&ws_ab_test=searchweb0_0,searchweb201602_10,searchweb201603_52
Kext link can be found here: https://drive.google.com/open?id=1SMHw-egHM2lsSiBMZUvp06zbGQgUVMvu
For scrolling with the middle button on the trackpoint you can use smart scroll for macOS.
Link: https://www.marcmoini.com/sx_en.html
To enable 2 finger scrolling gestures and some others you can use the ApplePS2SmartTouchPad kext.
Link to that can be found here: https://github.com/linusyang92/macOS-ThinkPad-T480s/tree/master/EFI/CLOVER/kexts/Other/ApplePS2SmartTouchPad.kext
Bring on Catalina!