WIZ811MJ / WIZ812MJ Network Module (W5100). Plug-in Network Module having W5100 Useful for Designing Network Interface Part Support Easy ; Quick Hardware Design Usable without H/W design for W5100, transformer and RJ-45 Fast evaluation available for W5100 and MCU in the target board Supports MCU BUS ans SPI Interface Supports auto MDI/MDIX (auto detection of crossover) Supports network status indicator LEDs FDX, TX, RX, LINK, Collision