CB2 is a computing core board similar to Raspberry Pi CM4. Rockchip RK3566 Quad-core 64-bit 1.8 GHz:Delivers Smooth for Klipper Operation 2GB LPDDR4:Faster RAM 32GB eMMC Storage:Stable, Shock-Resistant Klipper Operation 0.8 TOPS NPU:Enabling the Future of AI-Powered 3D Printing Bluetooth 5.2 40-pin GPIO:Compatible with the for Raspberry Pi Ecosystem Display:HDMI-compatible 2.0A interface, support 4K display Project Level:Advanced Projects. High-speed Printing CB2 Specifications: CPU:Rockchip RK3566, Quad-core Cortex-A55 @ 1.8GHz GPU:Mali-G52 1-Core-2EE NPU:0.8 TOPS NPU RAM:2GB LPDDR4 Onboard eMMC:32GB MIPI DSI Display Support:Yes (320P-1080P 60Hz) Camera:2-Lane MIPI CSI2 (320P-1080P 60Hz) USB Ports:3 x USB 2.0, 1 x USB 3.0 PCIe:PCIe 2.1 1x1 Lane (Supports M.2 2242 4PIN+5PIN) GPIO:Standard 40-pin GPIO Header HDMI-compatible Output:HDMI-compatible 2.0 OUT (480P-4K 60Hz) WiFi:2.4G/5G, 802.11 ac/a/b/g/n, 433.3Mbps Ethernet:Gigabit Ethernet Bluetooth:BT5.2 TF Card Support:Yes (SDIO2.0) Output Voltage:3.3V±2%/100mA Colour:Black Material:PCB+electronic components Size:40mmx55mm (Same mounting hole positions as for Raspberry Pi CM4) Package Contents: 1 * CB2 Core Board 1 * WiFi antenna 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.