Thank you for your support of our products. If you don't have the original power adapter, you can buy other adapters with suitable specifications.

You can refer to the parameters given in our manual for purchase. The adapter specifications suitable for Cosmos 4K SE are: 250V, 2.5A in the high-voltage area, 125V, 7A in the low-voltage area. The adapter socket size is: positive and negative pole diameter 2.9mm, ground pole diameter 3.8mm. For detailed size, please refer to the following pictures.

If the above solutions cannot solve your issue, please contact Nebula Customer Support at support@seenebula.com for further assistance.