Yes, you can connect Wi-Fi to the Captiva R78-283. Although the specific details about the Wi-Fi function are not explicitly mentioned in the sources provided, it is common for modern gaming PCs like the Captiva R78-283 to have Wi-Fi connectivity. However, if you want absolute certainty, you should check the specifications of the motherboard or the manufacturer's official product description, as some motherboards may require a separate wireless card.