My name is CM4-ETH-RS485-BASE-B, which is an expansion board that can be used with Raspberry Pi Compute Module 4, and supports a 7-36V DC power supply and 5V DC-DC power supply of Typc-C interface. Onboard four isolated RS485 interfaces, 100M+1000M dual network ports, HDMI interface, two CSI interfaces, two USB interfaces, etc…
Packages Includes:
1 x Waveshare Dual ETH Quad RS485 Base Board (B) for Raspberry Pi Compute Module 4c
Raspberry Pi Compute Module 4 – 4GB RAM, 32GB eMMC, 2.4/5.0GHz Wi-Fi & Bluetooth 5.0 (CM4104032)
RP2040 Microcontroller IC by Raspberry PI-REEL of 100
Due AT91SAM3X8E ARM Cortex-M3 Board with Micro USB Cable Compatible with Arduino
N20 4WD Robot Chassis
5 in 1 Pure Copper Heat Sink for Raspberry 4B 








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