Work for for 3.5mm jack equipment,Connect 3.5mm Male to 6.35mm Female（1/8" to 1/4" adapter）, allows you connect headphones to audio devices | made of pure copper and its service life is much longer than plastic and gold plating. | Pure copper connectors resist corrosion and ensure minimal signal loss. | Handy and portable, widely work with earphone, headphone, karaoke system and etc | 100% Lifetime warranty,and friend customer service.

【PLAY MUSIC IN CAR OR SPEAKER】: This product allows your U disk to play music in the car audio system or 3.5mm speaker. | 【SUPPORT MP3/MP4 MUSIC FORMAT】:This auxiliary line supports MP3/MP4 music format. M4A format is not supported. No need for car decoding. Support USB flash memory, but limited format. Not suitable for USB headsets. | 【COMPATIBILITY】: U disk in NFTS format is not supported. Support FAT32 and EXFAT. | 【Note】: 1) It's not a signal converter! 2) Only supports the player. 3) Not suitable for USB headphone. 4) Cannot connect to Laptop/ PC. 5) Cannot connect USB speakers to the TV. 6) Does not support iPod these decoder devices (This product uses external power supply. A USB cable is included). | 【WARRANTY】: Provide 12 months warranty service.

Upgrade Function: USB 2.0 4 port is for all USB Devices for Data Transfer&Power Charging ( Support Android and APPLE IOS ). | Big Expansion: Transform one of your computer’s USB ports into four with this USB multi hub. | Ideal for mouse, keyboards, cameras, smartphones and tv; not recommended to charge high-powered devices such as tablets. | Note: It does not work for car USB/ Apple Carplay. As these systems do not support USB hubs.（Compatible with TESLA model 3,which is similar to Laptop equipment.） | Service：our worry-free 18-month warranty, and friendly customer service.