• The big chip in silver package is an ESPRESSIF ESP32-WROOM-32E
• The black box behind the network port is a 11FB-05APNL: "Lan Transformer 10/100base-T Single Port"
• The little black square between the ESP32 and the network transformer is a KSZ8081: "a single-supply 10Base-T/100Base-TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable"
• The 8-pin SMD on the other side of the ESP32 is a 2249Y8S (not sure what, can't find any info)