In Short

The second generation Apple TV (A1378) launched in September 2010. Completely redesigned, it went from big to small, silver to black, and to HDMI- and optical-only. Gone also was the hard disk and the sync, as well as the OS X underpinnings. The new Apple TV was much more like an iPad, running iOS, and with just enough NAND flash storage to stream up to 720p video from your computer, or from iTunes. Initially Apple also offered movie and TV show rentals, though TV rentals disappeared after a while.

The second generation Apple TV (A1378) launched in September 2010. Completely redesigned, it went from big to small, silver to black, and to HDMI- and optical-only. Gone also was the hard disk and the sync, as well as the OS X underpinnings. The new Apple TV was much more like an iPad, running iOS, and with just enough NAND flash storage to stream up to 720p video from your computer, or from iTunes. Initially Apple also offered movie and TV show rentals, though TV rentals disappeared after a while.

In march of 2012, it was replaced with the 3rd generation Apple TV.