The 1-to-3 Port Ethernet Splitter RJ45 Adapter is designed to expand a single Ethernet port into three, allowing multiple devices to be connected to a single network port. It supports Cat5, Cat5e, Cat6, Cat7, and Cat8 cables, ensuring high-speed data transmission for various network setups. This compact and easy-to-use adapter is perfect for homes and offices where multiple devices need access to the internet through one Ethernet connection.