Note: Please allow some error due to manual measurement. Specification: Item Type: For RPi RP2040 Development Board_x000D_Material: PCB_x000D_Key: For Rp2040 For RPI_x000D_Core: Dual Core 264KB ARM_x000D_Suitable: For Switch_x000D_Thickness: Approx. 1.5mm / 0.06in Features: 1DUAL CORE 264KB ARM: For RP2040 development board is based on for rp2040 chip design, dual core 264KB ARM and 2MB Flash, smaller size and pre installed with the latest v2.6 firmware. 2UPDATE FIRMWARE: If you need to update the firmware, you can brush in the latest firmware by using the reserved USB A solder point and BOOT key (or upgrade via memory card). 3PCB MATERIAL: For RPi RP2040 dual core development board is made of PCB material for stable and reliable use, ruggedness and long life. 4COMPATIBLE FOR SWITCH: For RP2040 dual core development Board can be used to replace old or damaged parts and restore the performance of the device, compatible with for switch. 5PROFESSIONAL INSTALLATION: Professional soldering personnel and tools are required. Please prepare the tools in advance. Please refer to the PDF manual for specific soldering details. PackageList: 1 x_x000D__x000D_forRPiRP2040DevelopmentBoard 1 x Copper Wire 1 x Duct Tape