Adding a second processor to a T410

Hi,

i have a power edge T410  with e intel xeon 2.00 Mhz  processor.

i intente to install a second same processor.

when i'm input a second processor, the T410 don't run.

in all documentation seed , i don' t read information to additionnal supply or card.

can you explane to mi what it's the matear?

Regard's

Edouardo