The HPE Aruba Networking AP-ANT-311 (S1F79A) is a direct-mount antenna option for wireless networking setups using the AP-634 campus access point.
Its RP-SMA connection and tri-band 1x1 omni dipole design define the antenna format. HPE lists it among the antenna choices for AP-634, making it a component for configuring that access point with an external antenna.
HPE notes that AP-ANT-311 is usually connected directly to the AP-634 chassis. It is distinct from the AP-ANT-312 low-profile antenna variant.