W513 module with green substrate and a tan plastic extraction handle, attached by two rivets. Handle reads "DIGITAL EQUIPMENT CORPORATION MAYNARD, MASSACHUSETTS" in raised letters. Reverse side of substrate (with solder joints) reads "LEVEL AMPLIFIER W513F" along the edge. Obverse side is covered by a variety of components. "FLIP CHIP" can be read through substrate, under two inspection stamps, between the rivets. A repeating "NP" pattern in red print is visible on the substrate.