Download and install Broadcom Dell Wireless 1540 802.11a/g/n 2.4GHz/5GHz - driver id 755980
USB WiFi Adapter for Desktop, TSV 150Mbps/600Mbps Wireless Network Adapter for PC, Dual-Band 2.4G/5GHz Wifi Dongle Support Windows, Mac OS, Linux - Walmart.com
Amazon.com: NETELY IEEE 802.11AC WiFi 5 NGFF M2 Interface 600Mbps Dual Band WiFi Adapter for Windows 7, 8.x, 10, 11 Laptop PCs, NGFF M2 WiFi Card with Bluetooth 4.0, OEM DELL Wireless