You are buying Original Floppy disk drive FDD for IBM Thinkpad laptops. 1.44 MB. This floppy drive is compatible with these following IBM thinkpad laptops

IBM Thinkpad T20, T21, T22, T23, R30, R31, R32, R40, A20, A21, A22, A30, A31

Tested and fully working

If you have question, please ask before buying. Thank you