You can download all the required files from there:
GIGA PDU MIB SNMP V1,V3
GIGA PDU MIB SNMP V2
GIGA PDU MODBUS
GIGA PDU CLI COMMANDS
GIGA PDU REST API
PIML PDU MIB LATEST VERSION
PIML PDU MODBUS LATEST VERSION
PIML PDU REST API LATEST VERSION
