: Most retail packages include a physical driver CD. If your computer lacks a disc drive, use the online download method instead. Key Specifications of the Prolink AC650 Series
As of 2025, the Prolink AC650 is still relevant for users on a budget. However, with Wi-Fi 6 (802.11ax) becoming standard, the AC650’s driver may stop receiving updates in 2-3 years. That said, because it uses a common Realtek chipset, community-maintained drivers (especially on Linux and macOS) will likely support it for much longer.
Since Prolink uses Realtek chipsets, you can use the official Realtek driver for RTL8811CU/RTL8821CU: prolink ac650 driver
For Ubuntu / Debian / Raspberry Pi:
Use the official driver (works for AC650): : Most retail packages include a physical driver CD
Windows has a conflicting driver.
Without the proper driver, your operating system will either not recognize the adapter at all or will limit it to painfully slow speeds. Many users mistakenly throw away the adapter thinking it’s broken, when in reality, a 5-minute driver fix is all that’s needed. However, with Wi-Fi 6 (802
Before diving into the technical "how-to," it is important to understand what a driver is and why you need it.
: Delivers up to 433Mbps on the 5GHz band for HD streaming and gaming, and up to 200Mbps on the 2.4GHz band for general web surfing.