This is the standard method for managing the Deco M4. It is used primarily for blocking specific unauthorized devices. Block a Connected Device TP-Link Deco App Online Clients tab to see all connected devices. Tap on the device you want to restrict. Select the button and confirm to add it to the Block List. Manual Entry (Block List) More > Block List at the top right. Add by MAC Address and manually enter the 12-digit hexadecimal address. www.tp-link.com 2. Wi-Fi Access Control (Allow & Block Lists)

: Click the Advanced icon in the top right, then select Security from the left-hand menu and choose Access Control .

to select currently connected clients or manually enter a device name and its MAC address. 2. Using the Web Interface

Traditional routers often let you create a "Whitelist" (allowing only specific devices to connect) or a "Blacklist" (blocking specific devices).

Tap on the Wi-Fi Access Control module. Choose Your Mode: Tap Mode to toggle between: Block List Mode: Use this to ban specific unwanted devices.

Instead of blocking a device entirely, use Parental Controls to pause the internet or set time limits.

⚠️ Crucial Troubleshooting Step: Disable Private MAC Addresses