Front View
Lenovo's ThinkCentre M90n Nano is a desktop PC that measures a vanishingly compact 0.9 by 7.1 by 3.5 inches. It has two USB 3.1 Type-A ports, a USB 3.1 Type-C port, and an audio jack on its front panel.
Rear Ports
Two more USB-A ports and another USB-C port join a DisplayPort video output and an Ethernet jack at the rear. You'll need an external antenna for Wi-Fi and a USB-C or DisplayPort dongle to connect an HDMI monitor.
Top View
The dot over the "i" in the ThinkCentre logo is a red LED that glows when the computer's turned on. Though plastic, the Lenovo's case feels sturdy.
Underside
The red base of the Nano has three holes for a VESA mount if you want to stash the system behind a monitor or affix it to the underside of a desk. The ventilation holes weren't enough to keep our Core i5 test system's cooling fan from running constantly and noisily.
Keyboard and Mouse
Lenovo provides a cordless keyboard and mouse with the ThinkCentre M90n Nano. Both are basic but functional, not to mention color-coordinated.
Size Comparison
As you can see, the Nano is dwarfed by its bundled keyboard and not much bigger than its wireless mouse.