Zoom 4401 User Manual page 36

Note: As indicated above in the discussion of the WPS Status
option, you can use the WPS page to configure security
simultaneously on the AP+4 and the first device in the network.
When you select either Start PBC or Start PIN, the AP+4
configures itself and the network device with the defaults shown
below (the randomly generated key will not be the same):
All future devices on the network will be configured with those
settings.
36 Zoom AP+4 User Guide