A Nanofabricator is a mainframe device which can be used to buy and sell items, weapons and augments when hacked.

Most items, weapons and augments (provided they aren't already installed), with a few exceptions, can be sold for half the price it would be sold for. The Nanofabricator allows you to buy back anything that you have sold to it for the same price you sold it for

A Nanofabricator has 1 randomly chosen augment, 1 randomly chosen weapon, a Med Gel, a Charge Pack, and 2 randomly chosen other items available for purchase.

The items and weapons available will tend to be higher level the higher the mission difficulty is.