Features: The CH339F USB to 1 Port 100M Ethernet & 4 Port USB 2.0 Hub Module combines networking expansion and peripherals connection. Featuring fiberglass and metal construction for stable data transmission and durability performances. Engineered with premium fiberglass substrates and robust metal housing, this multi functional adapter ensures interferences proof transfer while supporting simultaneous connection for Ethernet and multiple USB devices. Ideal for IT professional, remote workers, and home users requiring reliabled multi device management, this versatile module simplifies setups for computers, printers, external drives, and networking dependent equipment. Perfect for office workstations, home entertainment centers, and mobile setups, it enables seamless integration of corded networkings and USB peripherals in space constrained environments. Specifications: Component: fiberglass board + metal Process: Precise circuit design Parameters: Supports USB 2.0 standard, provides 1 100M Ethernet and 4 USB expansion interfaces Size: 8x3.2cm3.15x1.25in, standard size Practicality: Widely used in situations where networking connection and USB expansion are required, such as desktop computers, laptops, embedded systems Package Includes: Motherboard module × 1 note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.