From Amazon.com (http://www.amazon.com/Sony-BDP-S550-1080p-Blu-ray-Player/dp/B001FN3ZRQ/ref=sr_1_1?ie=UTF8&s=electronics&qid=1257638184&sr=8-1):
Bring home the future of Blu-ray Disc technology with BD-Live and the
BDP-S550 Blu-ray Disc player. The S550 is the step-up model to Sony's
BDP-S350. It adds a gigabyte of onboard memory, so you can enjoy
expanded Blu-ray capabilities like BD-Live interactive features right
out of the box, and dts-HD compatibility for studio-quality sound.
BD-Live takes your movie experience to a whole new level. Download and
stream bonus content such as additional scenes, shorts, trailers and
movie-based games. Equipped with a built-in Ethernet port, the BDP-S550
makes it easy to access specially created BD-Live content and Bonus
View features. A USB port that allows you to add more storage to access
the growing number of special features that will be available given the
immense storage capacity of Blu-ray discs themeselves. This player
outputs a Full 1080/24p True Cinema picture and upscales your existing
DVD collection to 1080p when using the HDMI connection. Dolby
TrueHD/DTS-HD delivers studio master quality audio which is designed
specifically for high definition entertainment. Make the most of all of
these features with the icon-based Xcross Media Bar, which provides
simple navigation of the player's menu system.
Key Features
Slim chassis- True 1080p Output (Learn more)
- 7.1 Channel Dolby Sound , Dolby TrueHD and dts-HD (Master Audio and High Resolution Audio) (Learn more)
- 1 Gb of onboard memory and a USB Port Allows More Storage for Access to More Special Features, Like Bonus View (Learn More)
- Ethernet connection for BD-Live Compatibility and firmware updates (Learn more)
- Higher Bit Rates mean less video compression (Learn more)
- Emmy-Award Winning Xross Media Bar Interface (Learn More)
- Bravia Sync for Easy Connectivity (Learn More)