Lenovo Thinkpad X1 yoga 4th Gen. (year 2019). Can't work with X1 yoga 3th, X1 yoga 6th, 7th 8th, can only work with X1 yoga 4th 5th. Lenovo Thinkpad X1 yoga 5th Gen. (year 2020). ---- For the "X1 yoga 4th/5th Pen ", " X1 yoga 4th/5th Pen +1 nib " Options .
