Your Old Router Is the Problem, TP-Link Archer AX21 WiFi 6 Just Hit Its All-Time Low for Under $50 - Kotaku

TP-Link’s Archer AX21 WiFi 6 router has reached an all-time low price of $47 on Amazon, down from its $79 standard cost and matching the retailer’s best historical pricing noted for Prime Day. The article frames router limitations as a common cause of slow performance when internet plans remain unchanged, emphasizing the AX21’s dual-band AX1800 capability. It highlights features including Beamforming, OFDMA, VPN server support, and EasyMesh compatibility. The reasoning is that WiFi 5 typically communicates with one device per band at a time, which can contribute to congestion when multiple devices stream or update concurrently. OFDMA is positioned as a solution by letting the router divide channels for simultaneous device communication, improving stability for gaming while other traffic uses the connection. The story also calls out range support via four high-gain antennas and an advanced FEM chipset.