J33AP

This is the Apple TV 3G. It was announced on March 7, 2012 and sports 1080p playback. The name used in firmware is AppleTV3,1.

Application Processor
The Apple TV 3G uses the S5L8942 (revised A5 chip). Despite Apple's claim that it has one core, the A5 chip in the Apple TV 3G physically has two cores (though one of the cores is disabled; whether this is a software limit or if Apple is binning chips is currently unknown).

Wireless
The Apple TV 3G uses the dual-band BCM4330 for wireless communications. It supports 802.11a/b/g/n on both 2.4 and 5 GHz frequencies.

Specifications

 * Size: 0.9 inches (23 mm) (height) x 3.9 inches (98 mm) (width) x 3.9 inches (98 mm) (depth)
 * Weight: 0.6 pounds
 * I/O: HDMI, Optical audio, 10/100 Mbps Ethernet, IR receiver, Micro-USB port
 * Storage capacity: 8 GB (not user-manageable)
 * RAM: 512 MB