CHN421 is an essential companion for PC or laptop with not enough typical USB-A ports or lack of RJ45 Ethernet port, it turn a single SuperSpeed USB-C port into three USB-A port and one Gigabit Ethernet port. Simply connect the hub to the USB-C port on a laptop or PC, then benefit from more USB-A ports and one Gigabit Ethernet port, which makes it possible for computers without an Ethernet port to connect cable network. Access and transfer data more efficiently. Three SuperSpeed USB ports support data transfer rates of up to 5Gbps, and RJ45 Gigabit Ethernet port supports up to 1000Mbps transfer speed. CHN421 is sturdy and durable with premium aluminium body. Simple and easy to use with 3 USB ports on the top and an innovative built-in RJ45 Gigabit Ethernet adapter on the end, accommodate your collection of USB device without cluttering your desk space. Features Expands single USB-C port to three USB-A ports and a RJ45 Gigabit Ethernet port Aluminium unibody, durable and premium quality 3 SuperSpeed USB ports support speeds of up to 5Gbps Built-in Gigabit Ethernet supports up to 1000Mbps transfer speed LED indicator for power and network connection status USB powered, no external power required Easy to Install, plug and play, no additional driver needed Ideal for Chromebooks, Ultrabooks without Ethernet port Support Windows 7 and above (32/64-bit), Mac OS 10.6 and above Specifications USB Specification: USB 3.2 Gen1 (formerly known as USB 3.0) Interface: SuperSpeed USB-A Male Power: USB bus-powered / self-powered Working current: <300 mA +/- 10 mA Ethernet: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab (10BASE-T, 100BASE-TX, 1000BASE-T) Network protocols: IPv4 and IPv6 Operating temperature: 0 – 50 Celsius Operating humidity: 10 - 85% RH, non-condensing Dimensions: 87 x 24 x 17mm Operating Systems: Windows 7 and above (32/64-bit), Mac OS 10.6 and above, Chrome OS