What is the motherboard name of the dell mini 910

Don’t know the answer as there are several variants but you could use the ifixit Dell Inspiron 910 Speaker Replacement guide to access the motherboard to find out what is written on there, either the board number or the Dell part number.

If you don’t want to do this you could try entering the laptop’s Dell service number on this website to see if it identifies the board that is already installed in the laptop.

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