The listing, Xbox Live 48 hours Trial Gold has ended.
To redeem
1. Sign in to XBOX LIVE account (the one on which you want use this code on)
2. Press central (Guide) button on controller.
3. Go to Marketplace blade and on this blade choose "Redeem Code" option.
4. Enter received 25 digit code and hit the confirm button.
5. On next screen choose confirm.
Code is verified to be a working code!
Good Luck and Happy Bidding!