One of these should fit: original Huawei Giga Cube power supply HW-120100E01-12V 1A black bulk. Available for less than 10 francs on Amazon, for example.

Hello dear customer,

Thank you for your interest in our B628-265 4G Router, white.

You are welcome to contact us at Huawei Customer Support for a replacement part for your router.

If you have further questions about specific functions or need help, you can contact us at any time.
You can reach us quickly and easily via our free hotline, by email or via chat - Monday to Friday from 09:00 to 18:00.


We are here for you.

Best regards
Your HUAWEI Customer Service Team