The disk body structure USES the heat radiation rib, which has good ventilation and good heat radiation.

盘体结构设计上采用散热筋，具有良好的通风散热性。

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By adopting a sliding disk cover, the new PS3 continues with the characteristic sleek curved body design, which fits various places in the home and enables users to enjoy an array of entertainment content.

ENGADGET: Sony announces a slimmer PlayStation 3, 250GB bundle launches September 25th for $269