Both the ASRock B850M Pro-A and the ASRock B850M Steel Legend WiFi share the same fundamental platform: an AM5 socket on a B850 chipset, housed in an identical Micro-ATX form factor at exactly 244 × 244 mm. This means they target the same case sizes, support the same current-generation AMD processors, and offer the same overclocking headroom courtesy of the B850 chipset. Both also include dual BIOS — a meaningful safety net that lets users recover from a failed firmware flash without additional hardware — and carry an identical 3-year warranty. For core platform capability, they are evenly matched.
The divergence lies entirely in connectivity and aesthetics. The Steel Legend WiFi integrates Wi-Fi and Bluetooth, which the Pro-A completely omits. In practical terms, this matters most in builds where routing an Ethernet cable is inconvenient, or where wireless peripherals and audio devices rely on Bluetooth pairing — both increasingly common in compact desktop setups. The Steel Legend WiFi also adds RGB lighting, which has no performance impact but is a deliberate lifestyle choice relevant to windowed-panel builds. The Pro-A, by contrast, is a purely utilitarian board that assumes a wired network environment and has no interest in illumination.
For users who already have a wired network and no need for Bluetooth, the Pro-A is the leaner, no-frills choice with no functional compromise. However, the Steel Legend WiFi holds a clear general-purpose edge: its built-in wireless connectivity removes the need for an add-in Wi-Fi card, preserving a PCIe slot and simplifying the build — making it the stronger recommendation for most users unless cost or a strict wired-only requirement pushes them toward the Pro-A.