We're just some folks with repair on our minds...
Tag da equipe: CPSU-WHITE-W20S1G6
Looks like the part number is 5T60Q96460 for the silver model and 5T60Q96439 for the dark gray model. I found that info on this Lenovo Support page; just search for touchpad to find the two compatible parts.
I’ll add those part numbers to the introduction of this page for future reference.