The Rosewill RNX-AC1900PCE uses a Broadcom chipset.
Rosewill RNX-AC1900PCE Driver
File: RNX-AC1900PCE_Win10.zip
03ca6da2f1d3a13660a01413ec8dd904e8f9c19b0694dbfeca6355f4993e9033
Rosewill RNX-AC1900PCE Driver
File: RNX-AC1900PCE_121__WindowsXP_7_8_8.1.zip
5016b0b7b92c46dae1ed66a9f642ccfb06f82306ebe8639228500b1afcd3f993