Features: Supports 3042/3052 type 4G/5G Module. The Ethernet Networking is backwards suitable for multiple data rates(2.5Gbps, 1 Gbps, 100 Mbps Base-T connection). The 2.5G Ethernet port automatically negotiates between higher and lower speed connection. Suitable for business traveler and digital nomads, this adapter simplifies the management of multiple cards and enhances efficient data communication. Selected from PCB+Metal,which is durability. Specifications: Component:PCB+Metal Size:Approx.104x113mm/4.09x4.44inch Package Includes: 1 Set 4G 5G Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.