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The ASUS Eee is the only notebook of this trio with a VGA connector for an external monitor. The right-hand side of the Eee also carries two USB 2.0 ports (making a total of three), an SD/MMC card slot and a Kensington lock slot. The Intel Classmate's right side has the power connector, a second USB port and a fan vent, while the OLPC XO has a pair of USB ports (again making three in all), one mounted horizontally, the other vertically.
Viewed from the front, the bulkiness of the 4.4cm-thick Intel Classmate (centre) is clear, as is the relative slimness of the ASUS Eee, which tapers from 3.5cm at the back to 2.15cm at the front
In this picture, we have removed the protective cover of the Intel Classmate (centre) to reveal the SD card slot at the back. The rear of the ASUS Eee is mostly taken up by the battery, the only other feature being the power connector. Meanwhile, the back of the OLPC XO is simply a carrying handle.