User`s guide

Chapter 1 Introducing the ZyXEL Device
NWA3550 User’s Guide
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1.6 Hardware Connections
See your Quick Start Guide for information on making hardware connections.
" Your ZyXEL Device has two wireless LAN adaptors, WLAN1 and WLAN2.
WLAN1 uses the RF1 antenna and WLAN2 uses the RF2 antenna. If you
connect only one antenna, you can use only the associated wireless LAN
adaptor.