ASUS PCE-AC56

Overview
The FCC test report notes the manuf. as Arcadyan.

The PCI ID for this device is found in the driver set for the ASUS PCE-AC68.
 * It seems to be using the default BCM4352 ID.

BCM4352_D11AC_ID	0x43b1   /* 4352 802.11ac dualband */ BCM4352_D11AC2G_ID	0x43b2   /* 4352 802.11ac 2.4G device */ BCM4352_D11AC5G_ID	0x43b3   /* 4352 802.11ac 5G device */

Review of Linux Compatibility

 * Asus PCE-AC56 (PCIe, 802.11ac, 1300Mbps, 2×2 MIMO, TurboQAM)
 * The Asus PCE-AC56 is a PCI Express WiFi card with PCI ID: 14e4:43b1

03:00.0 Network controller [0280]: Broadcom Corporation Device [14e4:43b1] (rev 03) The card uses the Broadcom BCM4352 chipset and wireless connections of 802.11ac standard.
 * Until now there is no Linux driver for the Asus PCE-AC56 in the Linux standard kernel.
 * However, a driver for the used chipset is provided by Broadcom for download.
 * This driver has to be compiled and installed per hand.