Standard 5.25 -inch optical drive bay metal mounting bracket, compatible with most ATX/MATX desktop computer cases for seamless front installation; Mixed 4-port
USB layout: 2 high-speed USB 3.0 (5Gbps) for storage devices + 2 USB 2.0 for low-power peripherals such as mouse, keyboard and wireless receivers; Integrated independent HD stereo audio output and microphone input jacks, convenient for gaming headsets and online meetings without reaching rear case ports; Equipped with matched internal 20Pin USB 3.0 and 10Pin USB 2.0 header cables to connect corresponding motherboard ports for stable signal transmission; Driver-free plug-and-play design, fully compatible with Windows and macOS desktop operating systems for DIY PC builders and office workstations