Lenovo HEAT SINKS 5H40G86511 is compatible in the following Models:

Lenovo C Series all-in-ones

C50-30 All-in-One (Lenovo) - F0B10041AU
C50-30 All-in-One (Lenovo) - F0B10090AU
C50-30 All-in-One (Lenovo) - F0B100JNAU