Does BCM943602CS work without antennas?

I want to buy BCM943602CS and m.2 adapter for BCM943602CS.

https://www.ebay.com/itm/A1398-BCM943602CS-BCM94360CS-wireless-card-to-NGFF-M-2-Key-A-E-adapter-for-IO/283486525721?hash=item42011d1919:g:0PMAAOSwDXxc0Rp2

https://www.ebay.com/itm/Broadcom-BCM943602CS-802-11ac-Bluetooth-4-0-Card-for-A1425-A1502-A1398-653-0194/183122854159?hash=item2aa2f9010f:g:VO8AAOSwjpRapkqV

Do they work properly?

Is it high speed connection?

Do I have to buy anything else?

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Please tell me.