The identifier typically refers to the software/driver CD label included with generic, budget-friendly 802.11ac wireless USB adapters, rather than a specific chipset model. Most adapters shipped with this "RTL19OCT" disc are based on Realtek chipsets , such as the RTL8812BU or RTL8811CU . Driver Identification and Download

While the RTL19OCT label is common on generic hardware, the internal chipset is often part of the Realtek RTL8811 or RTL8188 series. You can search for these specific model numbers on the Realtek Official Download Page . Key Features of RTL19OCT Adapters The RTL19OCT series usually falls into two categories: