依Ｄ數字代表Ｄ乜

MA402LL/A, MA403LL/A, & MA404LL/A 代表乜野呢??? 應該好快就會有答案.... MacBook?? MacBook Pro??? 我琴日先同人入左部MacBook, 如果係聽日真係有新MacBook,　咁今個weekend又要去佢度玩多次!?!?!