I believe that captive means integrated (wbudowana) antenna.


The bridge also offers the capability to use integrated or non-captive antenna options.
https://docuri.com/download/wireless-cisco_59c1d367f581710b2...

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Note added at 5 hrs (2020-07-16 02:20:57 GMT)
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Here, for example,
"Three reverse-polarity Threaded Neill-Concelman (RP-TNC) connectors on the back panel for non-captive dual-band WLAN antenna (wireless models only)"
it is clear that non-captive antennas are stand-alone (oddzielne), not built in, so they can be connected to the back panel.
https://www.cisco.com/c/dam/en/us/td/i/200001-300000/270001-...

https://www.cisco.com/c/en/us/td/docs/routers/access/800/har...

- it uses a removable reverse-SMA antenna rather than the captive antenna of the company's lesser products - https://tinyurl.com/y7yx4ybo (try cached page - https://tinyurl.com/y8ckgwpv )

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1. If the antenna cable is not captive to the antenna attach it to the antenna connector prior to mounting the antenna. Tighten the connectors firmly by hand, or by using a special slip-jaw pliers made for this purpose. Protect the exposed cable connectors to ensure that the connections are weatherproof. - https://fccid.io/EV9WNIP2458C/User-Manual/manual-pt-4-10842 - section 5-3