- DC plug: 5.5 mm x 2.5 mm plug with polarity outer negative and inner positive, suitable for a variety of devices. - Length: 93 cm (37 inches) cable provides flexible placement. Please check if this length meets your requirements before purchasing. - Wide compatibility: LED advertising boards, LED displays, light bars, light strip modules, safety and scientific research equipment, LED lighting, industrial control equipment, energy equipment, instrumentation, semiconductor cooling and heating, air purifiers, electronic refrigerators, computer cases, TVs, mobile 2.5 inch hard drives, mobile DVD players, chargers, MP3/MP4 players and other home or portable devices. - Safety features: protects against over temperature, short circuit, undervoltage, over voltage and over current to ensure a safe and reliable power supply for connected devices. - Use scenarios: 1) Power LED displays and LED advertising boards in retail or events. 2) Power computer cases, TVs, 2.5" hard drives, and portable media players in home or office setups. 3) Power instrumentation, lab equipment, energy equipment, or semiconductor cooling/heating systems in industrial or research environments.