Hello,
Yes you need more software, this is called a WBEM collector or SNMP agent, the WBEM is more secure and preferred by HP
For your correct hardware type look here :
Then select your OS, for Windows X64 you should download either this :
for the SNMP agent or this for the WBEM version:
Or if you can install a complete SPP (Supportpack for Proliant) this would be better as this will install the latest patches, drivers, firmwares and agents. This will cause downtime due to the updates in drivers and firmware. If you only want the System info the SNMP or WBEM agent should be enough.