Vaunix Technology Corporation is a world-renown microwave radio support and design center. In addition to providing engineering consulting, repair and manufacturing services, Vaunix has designed and launched an inspired series of signal generators and digital attenuators for the test bench. Lab Bricks™ are portable, USB powered electronic test components that are controlled by a PC or laptop through onboard software. They have been designed exclusively for engineers and technicians working up through X-band who do not need the full feature set of more complex, bulky, and expensive microwave lab equipment. The graphical user interface (GUI) features intuitive controls with a large, uncluttered display, making these devices simple to use on a bench or on a tower. Made of die cast aluminum, they are also extremely durable. A Lab Brick 4-port USB hub is also available.