Look for the string "H/W Ver:" followed by a code (e.g., A1, C1, D4).
Alternatively, log in to the web management page; the version is often displayed in the top right corner or under "System Info". How to upgrade the firmware on your D-Link router proshivka d link 2500u skachat
Check the sticker on the bottom or back of the router. Look for the string "H/W Ver:" followed by a code (e