Dimension: 4.2cm x 3.5cm x 2cm ( L x W x H ) Splitter Design: 1 RJ45 In and 2 RJ45 female out. Convert and increase your Ethernet connections from 1 to 2 sockets. Convert a single RJ45 outlet to two RJ45 sockets easily. Divide original embedded Ethernet cables (8pins) into two groups Two groups respectively transmit data with purely physical connection Not the same as a network router, not the function of the assign IP addresses Easy to operate, plug and play, no extra driver needed Small and lightweight.