This 330W AC Adapter for GoWin BT-L1 was made in accordance with original specifications, 100% compatible with the original part. All GoWin BT-L1 AC Adapter are CE/FCC/RoHS certified, tested by manufacturer to match and/or exceed specifications of OEM products. For even greater peace of mind, every GoWin BT-L1 AC Adapter is backed by a solid 12-month warranty & 30-day Refund.