This power cord is a suitable replacement for VIZIO Sound Bar and Wireless Satellite Subwoofer Sub Soundbar Speaker SB3851 and many other VIZIO electronic devices. Works with VIZIO SB3851 S3851X-C4 S4251W-B4 S3821W SB3851-D0 S3820W And many more!!! Please check the plug end of your machine to ensure it matches the plug end in the picture and example photos Lengths - 6 Feet, 10 Feet, 15 Feet (Quality 18 AWG - Quality Replacement) 14 Day Money Back Returns MINUS $3 Restocking Fee Per Item. Buyer pays return shipping. A $3 restocking fee is going to be charged for returns of Non-defective items. Damaged or defective merchandise should be reported within 5 days after you received it, otherwise a $3 restocking fee will be applied. Seller reserves the right of asking for the proof of damage. Photo's of damaged items are required so they can be forwarded to Bonanza and the shipping company. Damaged or defective merchandise will be refunded or replaced at Seller's discretion. Any buyer suspected of fraud or scam will reported.