This is just a simple wireless AP. Managed meaning being controlled by you in multiple ways:
SNMPv3 Support
D-View Module
Private MIB
Command Line Interface: Telnet, Secure (SSH) Telnet
To be honest i don't really know of any "unmanaged" wireless AP, there are unmanaged network switches (lower end models where you have no control over QoS, port management, vlans, etc..)
