What is the Lenovo ThinkCentre M930q's form factor and what trade-off does it make?

Regarding the Lenovo ThinkCentre: The M930q keeps Lenovo’s 1-liter Tiny recipe at 179 x 182.9 x 36.7 mm, squeezing desktop performance into a mountable frame. The trade-off for its vanishing footprint is limited internal expansion, which is consistent across the Tiny lineup.