Safety protection mechanism supported: OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Input Voltage: 100-240V 50-60Hz. Output Voltage: DC 25V 2A. Compatible with LG NB4543 4.1ch NB3540 NB4540 NB 3540 NB 4540 SL5Y SL6Y SL7Y SL8Y SL8YG SK4D SL4Y SL3D SoundBar Smart Audio Wireless Sound Bar. Note: Please double confirm the device output and connector dimensions to ensure the compatibility. Focus on better products. We produce compatible charger adapter power cord. Acdctek 25V 2A AC/DC Adapter Compatible with LG NB4543 4.1ch NB3540 NB4540 NB 3540 NB 4540 SL5Y SL6Y SL7Y SL8Y SL8YG SK4D SL4Y SL3D SoundBar Smart Audio Wireless Sound Bar Power