Nanoracks
Credit: Nanoracks
The OCSD mission consists of two 1.5U CubeSats that measure 4 inches x 4 inches x 6.7 inches and weigh approximately 5 pounds. The satellites will demonstrate the first-ever high-speed data downlink from a CubeSat to a ground station using lasers.
https://www.nasa.gov/spacetech/feature/CubeSat_Missions_Pushing_Boundaries_of_Technology