In principiu ele sunt identice. DDR2 ambele, procesor socket 478, ambele cu procesor AMD, ambele cu placa grafica incorporata iar ca forma sunt identice.
Dar nu se potrivesc. Cele de L300 merg doar pe:Satellite L300-ST2501 Satellite L305-S5865 Satellite L305-S5875 Satellite L305-S5876 Satellite L305-S5877 Satellite L305-S5883 Satellite L305-S5884 Satellite L305-S5885 Satellite L305-S5888. Pentru 305d ai nevoie de unul de Satellite L305D-S5889 Satellite L305D-S5892 Satellite L305D-S5893 Satellite L305D-S5895 Satellite L305D-S5897 Satellite L305D-S5900 Satellite L305D-S5904 Satellite L305D-S5914 Satellite L305D-S59143 Satellite L305D-S5943