Features 1.DUAL 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. 2.UPDATE 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). 3.PCB MATERIAL: For RPi RP2040 dual core development board is made of PCB material for stable and reliable use, ruggedness and long life. 4.COMPATIBLE 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. 5.PROFESSIONAL INSTALLATION: Professional soldering personnel and tools are required. Please prepare the tools in advance. Please refer to the PDF manual for specific soldering details. specificationItem Type: For RPi RP2040 Development Board Material: PCB Key: For Rp2040 For RPI Core: Dual Core 264KB ARM Suitable: For Switch Thickness: Approx. 1.5mm / 0.06in PackageList1 x forRPiRP2040DevelopmentBoard 1 x Copper Wire 1 x Duct Tape NotePlease allow some error due to manual measurement.