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The expansion board is only suitable for the 38PIN narrow version ESP32 without mounting holes, not for the ESP-32 DevKit V1 version. ESP32 CP2102 Expansion Board. The breakout board can expand one GPI0 pin of the ESP32 board to two, great for you to reuse all the pins, a great tool for your project.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.