The ASUS AT5IONT-I comes with a stylish but beefy blue-colored heatsink with the company's branding slapped on it. There are only two SATA 3Gb/s ports for storage and one USB 2.0 front panel header.
Do note that for memory, the board uses SO-DIMMs instead of full-length DIMMs.
It appears that there is a provision for a Mini PCI Express slot, possibly for a half-height wireless card, although that didn't materialise. Overall, the board has a good layout and pleasant appearance.
There is an open-ended PCI Express x4 expansion slot on the board, meaning you could insert x16 devices such as a discrete graphics card.