Keywishbot Nano V3.0 Board for Arduino, Mini V3.0 USB Nano ATmega328P 5V 16M Micro Controller Board Welded Module (5PCS… Price: $18.99 (as of 24/11/2020 03:22 PST- Details)

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Micro-controller ATmega328P, using Atmel Atmega328P-AU MCU; Improved version with 3pcs pin headers (2pcs 15pin headers +1pcs 6pin headers), no welding needed.
Support USB download and Power.