Dear Customer: Hello! Lemorele is a brand from China, it has been founded 16 years to focus on the development of HUB class high-tech products, our technology in China is a top technology limited company!! Lemorele products are made of aluminum alloy! Our team has gone through many fall and crash test results without worrying about quality problems!! If you encounter a quest problem during your purchase you can contact us at any time and the Lemoele team will respond and solve the problem within 12 hours!!= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =Product Introduction: Lemorele products An external device designed specifically for laptop computers. By replicating and even expanding the ports of your laptop, you can make your laptop one stop connected to multiple accessories or external devices, such as power adapters, network cables, mice, external keyboards, printers, and external monitors. These ports perfectly solve the problem of A single USB A or USB port on a laptop.Functional features: 1. cost-effective High Cost performance: This dock has a total of 5 expansion interfaces :1 HDM interface with 4K@30Hz resolution to bring higher definition video experience for your extended display, 2 USBA2.0 and 1 USB A3.0 interface with 5Gbps transmission rate to make your hard disk box or U disk use more efficient, 1 USBC interface to provide PD 100W power supply, For you to solve the problem of laptop power, while compatible with Mac OS and Windows systems, can provide the perfect all-in-one solution for your Mac, Dell,HP, Lenovo,acer and other brand laptop expansion needs.2. 4K HD Display: The docks HDMI output 4K@30Hz ensures clear and sharp video output, making it ideal for streaming, gaming, and video editing.3. USB3.0 5Gbps USB 3.0 5Gbps: This docking dock 1 USB-A 3.0 port with 5Gbps lightning fast transmission to provide you with products such as SAMSUNG, Western Digtal, Kingston, Flash Oil SanDisk, Efficient and fast data transfer on SSDS such as crucial. There are also 2 USB-A 2.0 terminals that can simultaneously transfer a variety of data to meet your daily needs4. 100W Power Delivery Support PD 3.0 100W: Power adapter 100W power input for up to 85W charging for your laptop, Chromecast with GoogleTV, Steam Deck and other Type C devices Note Please check if the USB-C port of your device supports the power protocol/charging function, And a laptop charger that uses the USBTYPEC interface.5. Aluminium Alloy Case Metal shell: more texture, more durable, better heat dissipation, saferWide compatibility:This USB adapter hub is compatible with all systems and devices with USB A or USB C, HDMI ports, such as USB A USB flash drives, mice, keyboards, portable hard drives, mobile phones and more! It is compatible with Windows/MacProduct list:1 * USB adapter1* Instruction manual