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Last update: 6th Jan 2020 Questions around this Broadcom BCM4350 chipset (in particular the Dell DW1820A) have resurfaced again so I digged into the matter since most people reported it did not work. Outside the model fitted to Apple MacBooks (subsystem id 106b:0131, rev. 05), Wikidevi lists a few cards cards for this chipset, including: Dell DW1820A (several models with different part numbers) Foxconn T77H649.00 (Lenovo part number 00JT494) Lite-on WCBN808B (Lenovo part number 00JT493) All those cards carry PCI id 14e4:43a3 and normally offer high speed 802.11ac wireless + Bluetooth 4.1 services. Broadcom BCM4350 chipset is supported since Yosemite 10.10 and its hardware id is listed in the Info.plist file of IO80211Family's PlugIn kext AirPortBrcm4360 up to macOS Sierra 10.12, then AirPortBrcmNIC since macOS High Sierra 10.13: <key>Broadcom 802.11 PCI</key> <dict> <key>CFBundleIdentifier</key> <string>com.apple.driver.AirPort.BrcmNIC</string> <key>IOClass</key> <string>AirPort_BrcmNIC</string> <key>IOMatchCategory</key> <string>IODefaultMatchCategory</string> <key>IONameMatch</key> <array> <string>pci14e4,43ba</string> <string>pci14e4,43a3</string> <string>pci14e4,43a0</string> </array> <key>IOProbeScore</key> <integer>1241</integer> <key>IOProviderClass</key> <string>IOPCIDevice</string> <key>TruePowerOff</key> <true/> </dict> - - - - - - - - - - Edit: 06 Jan 2020 Removed the warning about DW1820/BCM4350 cards following tests confirming that disabling ASPM does fix the stability issues previously encountered by most users.