Throwing Star LAN Tap is an Ethernet intranet data analysis device. Adoption: immersion gold plate, fast transmission and less loss. This product is a tool designed to be applied to 10BASET and 100BASETX networks. The monitoring ports are J3 and J4, which are only used for receiving data. The usage is as follows: 1. Connect the Ethernet cable to be detected to J1 and J 2 of Throwing Star LAN Tap. 2. Connect the Ethernet cable to J3 or J4 of the Throwing Star LAN Tap, and each port only detects one aspect of data communication. 3. Use software such as TCPDUMP or WIRESHARK to capture network communication data on the workstation. Dimensions: 70mm x 70mm Color: Random Color(Random color, 't accept the specified color.) Material: PCB+electronic components Package Contents: 1 x Throwing Star LAN Tap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.