The Kaby Lake chipsets have an integrated network controller, which requires a so-called Physical Layer chip (PHY). It is a bit cheaper than a full network controller from Intel, even though it's quite pricey - for this reason most truly low-end boards still feature a Realtek controller. The boards in this test all feature an Intel or Killer network controller however.
Pretty much all manufacturers have opted for Intel network controllers this generation. All Micro-ATX boards in this test use the integrated network controller of the chipset, that can be used by implementing the WG-I219V PHY on the board. The ASUS Strix Z270G Gaming also comes with an 867 Mbps Qualcomm WLAN controller.
|ASRock Z270M Extreme4||Intel WG-I219V||-|
|ASUS Strix Z270G Gaming||Intel WG-I219V||Qualcomm 867 Mbps|
|Gigabyte Z270M-D3H||Intel WG-I219V||-|
|MSI Z270M Mortar||Intel WG-I219V||-|