Waveshare Wholesale Original Raspberry Pi 4 Model B 2GB 4GB 8GB RAM Development Board 1.5GHz CPU
By halving the RAM to 512MB, and removing the USB hub and Ethernet controller, Raspberry Pi 3 Model A+ is able to become smaller in size, and hit a lower price point.
Raspberry Pi 3 Model A+ incorporates most of the neat enhancements as its big brother Raspberry Pi 3B+, and features:
Like its big brother, the entire board is certified as a radio module under FCC rules, which in turn will significantly reduce the cost of conformance testing Raspberry Pi–based products.
Wiki : www.waveshare.com/wiki/Raspberry_Pi_3_Model_A+