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, robustness and long service life. 4. COMPATIBLE FOR SWITCH: For RP2040 dual-core development board can be used to replace old or damaged parts and restore device performance, compatible with for switch. 5. PROFESSIONAL INSTALLATION: Professional soldering personnel and tools are required. Prepare the tools in advance. Refer to the PDF manual for specific soldering details. Item Type: For RPi RP2040 Development Board Material: PCB Key: For Rp2040 For RPI Core: Dual-core 264KB ARM Suitable: For Switch Thickness: Approx. 1.5 mm / 0.06 inches 1 x For RPi RP2040 Development Board 1 x Copper Wire 1 x Tape