Reddit reviews KUNCAN 5ft USB 5v to DC 9v or 12v Step Up Converter Voltage Regulator Cable with DC Connector 5.5 x 2.1mm, USB Adjustable Voltage Converter with Switch for Router Mini Fan LED Strip Charge

【Product Specification】: USB A Male Input: 5v 2A; DC connector Output: 9v or 12v 0.7A max. DC jack: 5.5 x 2.1 mm. DC cable length: 5ft(1.5m).【Feature】: This USB step up cable is convert power from 5v to 9v or 12v. You can toggle the output voltage between 9v or 12v via sample switch. The part of PCB board is molded by PVC which is hard to damage. PLEASE NOTE: this convert cable only suit for the DC plug 5.5 x 2.1mm. NOT other size. Please check your device about it before purchase.【Safety Design】: BUILD-IN IDENTIFICATION RESISTOR; Reverse polarity protection, over current protection, over temperature protection, short circuit protection. A smart design for protecting your device from damage.【Multiple Application】: Use in 5v power source, such as power bank, solar panel, battery pack etc. Charge for your 9v or 12v devices with dc 2.1 x 5.5mm connector, such as: camera, router, stepper motor, desk lamp, speakers, blue tooth headset, mini fan, LED colorful light and other 9v or 12v devices.【What You Will Get】: 1 pcs dc step up convert cable √; 18 months warranty √; 24 hours passionate customer service √; 30 days freely return and exchange √. Any question, please feel free to contact us first, we will support you the best customer help.