Super I/O
Winbond W83627UHG-E
Ethernet
1 x PCIe GbE LAN by Intel 82574L
USB
1 x USB 2.0 external stack port, 1 x USB 2.0 Pin header via CN1, 1 x USB 2.0 Pin header via CN2
Serial
1 x RS422/RS485 header for CN2 (COM3)
GPIO
8-bits digital I/O by Pin header (CN2); 4-bits digital Input, 4-bits digital Output
Storage
1 x SATA Connector (7P+15P)
Battery
Support CR2477 Li battery by 2-pin header