Thank you for your purchase of the Inspiron 15R (M5110)! The M5110 and N5110 systems are very similar and the only significant difference comes in the processor. The M5110 systems are powered by AMD while the N5110 laptops are powered by Intel. The SWITCH lids designed for the N5110 laptops will ALSO fit the M5110 systems as well. Happy shopping!
Hope this helps!