512KB SRAM and 16KB of RTC SRAM Dual-core CPU at 240 MHz clock speed USB-C programming port The Arduino Nano ESP32 is available to order today in the Arduino Store, starting at $18.

Other than the USB port, there are other ways to power the Arduino Nano. You can use an unregulated external power supply with a rating between 6 and 20 volts, and connect it to the Nano's VIN pin ...