Waveshare CM4 Expansion Board for Raspberry Pi Compute Module 4 Mini Basic Expansion Board Compute Module Core Board 1. The CPU is upgraded to BCM2711, quad-core Cortex A72 64-bit processor, with more powerful performance_x000D_ 2. More memory options (1GB/2GB/4GB/8GB), suitable for large-scale data compilation_x000D_ 3. Higher-speed eMMC flash memory with a transfer rate of up to 100MB/s, which is 4 times faster than CM3+_x000D_ 4. Add wireless module options, use the same WiFi and Bluetooth modules as Pi4B, provide on-board PCB antennas and external antennas, which are more suitable for industrial applications. Adopt B to B connector design, change the gold finger design of previous generations of CM series, and enhance stability_x000D_ 5. Increase on-board Gigabit Ethernet design, support IEEE1588, suitable for network application development. Add PCle interface extension, which can flexibly add related modules_x000D_ _x000D_ Product name: Expansion board_x000D_ Model: CM4-IO-BASE-A_x000D_ Chip: BCM2711_x000D_ Interface: CSI/DSI/FAN/HDMI-compatible/USB/RJ45 Gigabit Ethernet/Micro-sd card/M.2_x000D_ Working voltage: 5V_x000D_ Power supply current: 3A_x000D_ Purpose: dedicated base plate for computing module_x000D_ colour:Blue_x000D_ Material:PCB+metal_x000D_ size:85 x 56mm_x000D_ _x000D_ Package Contents:_x000D_ 1 x CM4 expansion board_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_