12dBi Yagi directional antenna for 2.5G Wifi

[westernman]

This just popped up as an ad on my computer and I thought this might interest some on here struggling to get a strong enough Wifi signal in their marina.
Might be worth a punt.

Carte réseau sans fil pour ordinateur, antenne directionnelle Yagi, réception ou transmission du signal Wi-Fi, adaptateur USB Mini PCIE, 12dBi, 2.4G - AliExpress 509