This internal front panel expansion bracket fits vacant 5.25 -inch optical drive bays of desktop chassis to solve insufficient front port issues. It combines USB 3.0 Type-A and USB-C interfaces to connect mice, keyboards, external storage, mobile phones and other devices at the same time. Equipped with built-in internal cable to connect to the motherboard USB header, ensuring stable signal transmission. All ports are arranged on the case front for daily convenient plug and unplug. Compliant with USB 3.0 standard, it greatly accelerates large file copying speed. No extra drivers are required after installation, a cost-effective port upgrade accessory for gaming rigs, office workstations and home desktops.