The 1520 came in many configurations so while everyone knows you can install a BR PLAYER with DVDRW (the recording part of the device) there is a big issue with BR (Bluray) and here it is -> It takes a lot of horsepower to play BR. You gave the slightest of detail about your 1520.
I'm going with BOTH answers.
Yes, you can put it in. No it's a bad idea since the laptop may not play BR smoothly.
Bob
Is it possible to upgrade my DVD player/recorder to a Blu-Ray DVD player/recorder in a nine-month-old Inspiron 1520? Does Dell even make a DVD player/recorder?
Thank you

Chowhound
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