Look for a small sticker on the side of motherboards , the back of monitors , or the rear of routers . What Does the ASUS Warranty Cover?
Once you enter the serial number, the system will return one of the following statuses:
If you registered your product when you bought it, checking the warranty is much faster. asus warranty lookup
Before buying a used ASUS motherboard or GPU, ask for the SN and check it publicly. If the warranty period shows “0 days remaining” but the card is only 6 months old, it was likely a – not covered.
You cannot check the warranty without the device’s (often abbreviated as SN, S/N, or Serial No.). Here is how to find it based on your device type: Look for a small sticker on the side
If the online tool shows an incorrect date, you may need to provide a valid invoice or receipt to ASUS support to update your records.
Look for a sticker on the underside of your laptop, the back of your monitor, or the original packaging. It is typically labeled "SN" or "SSN." Before buying a used ASUS motherboard or GPU,
Navigate to Settings > System > About phone > Status .
Would you like a step-by-step guide with screenshots for checking via BIOS vs. Windows vs. physical label?
Restart your computer and enter the BIOS menu (usually by tapping F2 or Del during startup) to find the SN in the system information section. Step 2: Use the Warranty Lookup Tool