@TwoBoxers
The power adapter for my Streambar 9102 indicates it is a 12volt, 5amp, 60watt power adapter with a barrel connector. I didn't see this offered on the Roku accessories page under the power adapters https://www.roku.com/products/accessories, but did locate this one on Amazon indicating compatible with the 9102. https://www.amazon.com/Listed-OMNIHIL-Adapter-Compatible-Streambar/dp/B08X1RXFWS/ref=sr_1_3?keywords...
You can also likely find a universal power supply meant for laptops at Walmart or Best Buy that comes with different barrel connector adaptors. If you go this route, just verify that it meets the above specs.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102