Native support via inbox drivers from Windows 8.1 onward. Realtek’s utility provides roaming aggressiveness and band steering controls.

Despite a theoretical PHY rate of 433 Mbps, the USB 2.0 interface caps effective throughput at ~280–320 Mbps due to protocol overhead (8/10b encoding, packet framing). Thus, actual TCP throughput typically peaks at 200–260 Mbps.

Realtek provides closed-source Linux drivers and Windows INF-based drivers. Open-source support is incomplete; the rtl88x2bu driver (reverse-engineered) offers partial functionality but lacks Bluetooth coexistence support (the 8811CU does not include Bluetooth, unlike the 8821CU).