The turtle on its back. You can see one SLI connector, the 660 (non-Ti) series is allowed to work with up to two cards in SLI mode. For proper scaling and little driver issues as possible we always recommend to stick to 2 cards in multi-GPU mode anyway. We'll show you some reference SLI results in our article as well.
Nice to see is the top metal bracket, it makes the flexible PCB feel real sturdy and will not bend. Overall the first impression doesn't doesn't disappoint at all for sure.
I already mentioned it, but Inno3D gives the card two DVI connectors (dual-link), one HDMI and a DisplayPort connector (both full size). The GeForce GTX 660 has a maximum power consumption of 140 Watts, the typical power raw will actually be a good notch lower.
Interesting, you'll need to power the card with two 6-pin PCIe PEG leads from your power supply. Most card will have just one PCI Express Graphics 6-pin connector.