OWC Slim. Optical drive interface: SATA. Chipset: JMicron JMS578, Power source type: USB, Compatibility: Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, OS X 10.9 Mavericks,.... USB version: 3.2 Gen 1 (3.1 Gen 1), USB connector type: Micro-USB B. Product color: Black. Width: 5.63" (143 mm), Depth: 5.75" (146 mm), Height: 0.906" (23 mm)