Chip model: AT90USB1286. Ideal for microcontroller software development and learning. Pre-installed bootloader enables direct application code upload via standard USB interface—ideal for beginners. Usage: Download teensy.exe from the official source. No driver installation required. Supports erase, program, and verify functions directly. Eliminates the need for an external programmer. Compatible with the Teensy development environment in popular IDEs. Key Features: - USB-capable AVR processor - 16 MHz clock speed - Single-button programming - Easy-to-use Teensy Loader application - Compatible with Windows, macOS, and Linux - Compact size (approx. 51 x 18 mm), suitable for various projects Color: Green and black Material: Metal and plastic Package Includes: - 1 × Teensy 2.0++ USB AVR Development Board - 1 × USB cable Note: Colors may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 mm.