The TP‑Link Wireless PCI Adapter 150Mbps (WN781ND) is an internal Wi‑Fi network card that installs into a desktop computer’s PCI slot to provide wireless connectivity up to 150 Mbps on the 2.4 GHz band. It includes external antennas for improved signal reception and supports standard Wi‑Fi security protocols, making it a simple way to add or upgrade wireless networking on a desktop PC.
