1. PI4B with CB1 installed, the performance can be close to 3B, and can also be used instead of 3B2. Because of the modular form, PI4B and CM4 have high modularity, which is convenient for users to use DIY3. PI4B+CB1, with high cost performance, can become a low-cost choice for 3D printer users who use ordinary motherboards to run KlipperCB1:CB1 is a computing core board similar to CM4.1. CPU: Allwinner H616, Quad-core Cortex-A53 @1.5GHz2. GPU: Mali G31 MP2, support OpenGL3.23. RAM: 512MB/1GB DDR3L SDRAM4. Display: HDMI2.0A interface, support 4K display5. USB 2.0 port6. 100M Ethernet + 100M WiFi7. The same BTB header as the CM4PI4B: The PI4B uses the same card holder as the CM4, and can be directly mounted to the PI4B board-to-board. In addition, the PI4B uses the same board frame and interface as the 4B, so the PI4B with the CM4 installed can be used as a 4B.1. 1000M Ethernet interface to realize high-speed networking of equipment2. - interface, external screen, high-definition sound quality, high-definition picture quality output3. -sd interface, can insert SD cardColour:Photo ColorMaterial:plasticPackage Contents:1 x CB1 core board1 x PI4B adapter1 x SKR MINI E3 V3.0 main control boardOnly the above package content, other products are not included.Note: Light 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.