3Com AirConnect 9550 - 802.11 D Support; Antenna Type

50 System Configuration
802.11d support
802.1d allows the device to communicate in areas where the
802.11 standard is not allowed. It adds features and restrictions to
ensure compliance.
Antenna Type
If you have added external antennas (to replace the original
included 3 internal antennas), check the External High-Gain
Radio Antenna radio button.