There’s really not much to say here. If you’ve ever used or seen an Apple TV 2, then you know exactly what to expect here. Physically the two devices are indistinguishable.
The only difference between the 2nd generation Apple TV and the 3rd generation Apple TV is that the latter supports 1080p resolution courtesy of a new A5 single core chip. Other than there, everything inside the box, all of the connectors — everything — is the same…
The only way to tell the two devices apart with the eyes is by looking at the model number on the bottom of the device, but even that’s very tiny.
2nd generation Apple TV = A1378. 3rd generation? A1427.
Have you purchased a new Apple TV? Are you excited to finally have 1080p resolution output capabilities?