The HP ProBook 4540S Series 25.90A9L.021 Wi-Fi Antenna Cables Original Used Grade B are genuine replacement parts designed specifically for the HP ProBook 4540S laptop model. These clear-colored cables are essential for maintaining the Wi-Fi connectivity of the device. With a Grade B quality rating, these antenna cables are reliable and durable, ensuring a seamless connection for your laptop. Perfect for those looking to replace damaged or missing cables on their HP ProBook 4540S laptop.