Use a device with a strong Wi-Fi adapter (laptop, not an older smartphone) within 10 feet of the router, no walls. Run speedtest.net . Expect 60-80 Mbps downstream. If you see below 20 Mbps, re-check your channel width and security settings.
The is a legacy 300Mbps Wireless N broadband router typically used in small office or home office (SOHO) environments. Like any networking device, its performance, stability, and security are dictated by its firmware—the embedded software that controls the router's hardware. 300m wirelessn broadband router ibwrb303n firmware
: Updates often include fixes for vulnerabilities that could allow unauthorized access to the network. Use a device with a strong Wi-Fi adapter