Features: This is a CM4 To Pi 4B Adapter for Raspberry Pi and is an alternative solution for Raspberry Pi 4B. Onboard standard CM4 connector supports access to CM4 Lite-/eMMC series motherboard The position of the interface- is consistent with that of the raspberry pie 4B motherboard On-board: Rj45 Gigabit-Ethernet port 10/100/1000 adaptive It is designed for use both as a development system for compute module 4 and as embedded board integrated into end products-. Specifications: Item; Raspberry Pi CM4 to Pi 4B Expansion Board Interface:40Pin Size:approx 86x56mm/3.39x2.2in Support :standard CM4 connector access to CM4 Lite/eMMC series motherboard On-board: Rj45 Gigabit Ethernet port 10/100/1000 adaptive Voltage: 5V 2A Note: Do not include Raspberry Pi and CM. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. Package includes: 1PC Expansoin Board 1 Set Screws