5 Things to Know About the ASUS PN51 Mini PC

It has a smartphone-sized footprint At 115 x 115 x 49 mm, the PN51 is about the size of a smartphone laid flat, but three times as thick.

It uses an external power adapter The mini PC runs on a 19V DC adapter rated at 65W or 90W, depending on the processor.

The adapter wattage depends on the CPU Choose a lower-power processor and you get the 65W adapter; a higher-power one requires the 90W adapter.

It is not self-contained Unlike some mini PCs, the PN51 does not have an internal power supply, so you must account for the external brick.

Size limits upgrade options The compact chassis restricts internal upgrades, so choose your RAM and storage configuration carefully at purchase.