1. Type: USB2.0 HUB 2. Product main control: FE2.1 3. Input interface: Front 9PIN 4. Packing list: panel x1, screws x 5, 9PIN-9PIN Dupont wire x 1 5. Hardware requirements: a motherboard or adapter card with a 9PIN interface, a chassis with a free 5.25-inch optical drive 6. Strengthen the power supply, provide enough current for the high-speed USB interface, and solve the problem of insufficient power supply at the front of the chassis 7. The built-in USB port can be plugged in dongle, mouse transmitter and other infrequently plugged devices 8. Product size: optical drive 148 x 155mm 9. Note: this product is equipped with a HUB chip, as long as a 9PIN can transfer 7 USB 2.0 interfaces