8V 2A Power Supply Adapter 5.5x2.5mm DC Port Charging Cable for Speaker LED Display Screen Signboard Switcher US Plug Item Type: Power Supply Adapter Product Material: ABS Output DC Interface: Outer Diameter 5.5mm Inner Diameter 2.5mm, with circlip, compatible with 5.5x2.1mm Cable Length: Approx. 93cm / 36.6in Application: LED signboard, LED display, luminous word, lamp module, monitoring, scientific research equipment, LED light fixture, industrial control equipment, comm equipment, power equipment, instrumentation, semiconductor cooling and heating, air purifier, electronic refrigerator, LCD, audible visual products, security, computer chassis, small TV, 2.5 inch mobile hard disk, mobile DVD, charging equipment, MP3 MP4, small desk lamp, router, switcher, game console, color light, camera, controller digital and other home or portable equipment.