One-click screen lock: Smart shortcut key, short press to lock screen, long press to screenshot, convenient and fast, making office work more efficient. No queuing: Four ports simultaneously, eliminating the scarcity of interfaces. Four USB ports can be used at the same time, freeing you from the hassle of insufficient computer ports and the hassle of repeatedly plugging and unplugging. Flash data transfer: Transfer 1GB in 3 seconds, supports 3.0 high-speed transmission, theoretical speed of 5Gbps, actual measured speed of up to 350MB/s, doubling file transfer efficiency. Office partner: Say goodbye to a cluttered desktop, a clean and tidy desktop, no need to bend over to plug and unplug ports. Driver-free multi-device/system compatibility: Compatible with laptops, desktops, TVs, Switch / PS game consoles, etc. Windows / MacOS, no driver installation required, just plug and play. Product Specifications Product Name: Multimedia Control HUB + USB 3.0 x 4 Interfaces: USB 3.0 x 4 Transfer Rate: 5Gbps Functions: Computer USB 3.0 Expansion/Driver-Free Plug and Play/5Gbps Transfer/External Shortcut Keys Length: 1.2 meters Color: White Material: plastic Package Contents: 1* Desktop Expansion Hub