Where to buy extra AC plug adapter for USA?

Technical Support for Routers
1

Got the Beryl and it came in the box with an AC adapter and two ‘screw in’ adapters. One for euro plug, and UK plug. Nice to switch. Where could I get an extra screw in plug for USA socket style?

Thanks

2

Are you in the EU? Check this one

3

Since it is (yay!) USB-C, you could consider any 3 amp/5V brick. No PD though. I did get the adapter suggested by @alzhao alzhao as well.