The demo board is 2 layer PCB and 1 side SMD for RTL8305SB, 2 side SMD for RTL8305S. included schematics and manauals

RTL 8305sb demo schematic board fot 5 port switch

Realtek单独芯片5*换机芯片RTL8305SC做的5口百兆交换机PDF格式的交换机，以此为参考可以做5*换机(Realtek single chip 5 switch chip RTL8305SC do 5 hundred megabit switch PDF format switch, take this as reference, can do 5 switchboard.)