Standard 5.25 -inch optical drive bay form factor, embedded installation frees up rear motherboard ports with easy front-panel access; 7 built-in USB 2.0 ports support simultaneous connection of mice, keyboards, card readers, cooling fans and low-power peripherals; Comes with SATA 15Pin power connector to supply extra power for multiple connected devices, avoiding insufficient power and unrecognized hardware; Matched 2-foot internal cable with standard 9Pin USB 2.0 motherboard header, simple tidy wiring for all mid/full tower PC cases; Driver-free plug-and-play design, sturdy metal mounting frame, fully compatible with Windows desktop systems for DIY office & entry gaming builds