Since I installed the Nov 2015 Windows update the download speed is extremely slow (0.5 Mbps) compared to the wired connection (10.0 Mbps). The driver is the 'Latest Driver' (as indicated by the Windows update function). I went to the Dell site and downloaded the latest driver from Dell and it did not allow the update to my Dell Vostro 1520 saying that the Driver does not support Windows 10. Hp 530 Drivers For Windows 10 there. If there is a fix out there please share.

HOME >DEVICE CATEGORIES >NETWORK ADAPTERS >BROADCOM CORPORATION >DELL WIRELESS 1390 WLAN MINI-CARD. Nvidia Corp Network Adapter Driver: • Windows 10.

OK, just found the answer. Appears that Windows 10 updates sometimes can not distinguish which is the appropriate driver from the list of compatible drivers on the PC. I watch this youtube which provided the approach to finding the solution https://www.youtube.com/watch?v=WZyJDgpkix4. Dell 3010cn Driver Windows 10.