In the specifications of the manufacturer https://www.captiva-power.de/produkte... there is no information about WLAN connectivity. I assume that no WLAN module is installed here. However, there are simple USB solutions that make such PCs WLAN-capable, such as https://www.digitec.ch/de/s1/product/tp-link-archer-t3u-ac1300-mini-usb-30-netzwerkadapter-10857405.