Hi, I recently bought the Acer Aspire 7540 laptop, I am just wondering about this drive...?

When looking on My Computer I came across this: BD-ROM Drive (F:) I am wondering is this for an external Blu-Ray Drive or what? I dont understand at all... also, if this does mean external, then could I plug a PS3 into it and play Blu-Ray's that way?? (I'm not entirely educated on this at all, lols)