Advanced two USB 3.0 ports for maximum data transfer speed Top access external 3.5″ & 2.5″ HDD/SSD for easy mobile data transfer Support for longer high-end graphics cards (up to 305 mm) Shockproof HDD tray design for 3.5″ HDD and compatible for 2.5″ HDD/SSD USB 3.0 x 2, USB 2.0 x 2. MIC x 1, Audio x 1