Four port can be used at the same time Say goodbye to waiting High-speed internet access with 100Mbps Ethernet port, no lag. Can be connected to a microphone independently Connect your desktop microphone for a better voice experience when singing karaoke or live streaming on your computer Universal computer with USB interface Supports use on laptops, desktops, and all-in-one PCs with USB ports Product Name: Multi-functional Sound Card Network Expansion Dock Product Model: Z336 Material: Alloy solid material Network port: 100Mbps network port Audio: Supports headset + microphone USB 2.0: Can connect to USB flash drives/keyboards/card readers/printers/coolers, etc. (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Package Contents: 1*100Mbps USB Adapter