Blue ray sleds

Okay so i have been learning alot from u all and i appreciate everything. Though i still have a question about the hd/dvd players. I found one on craigslist for $20.00 with little usage. Is there a way of confirming if it would have the blue ray? Do all the xbox 360 hd/dvd players have this component?

Thanks, Skylight

No, it probably has an HDDVD sled inside, which has a violet laser diode.But it has to be the hddvd upgraded drive, the stock 360 drive only had a red DVD unit, as I recall.