Up for sale here is this brand new Eaton 1F (1 farad) 2.5v supercapacitor. This is the correct replacement for the clock capacitor in Xbox 1.0 through 1.5. The originals go bad, but this replacement will help fix your Xbox and will generally solve the issue.
This is a brand new cap, made in early 2022. It is guaranteed to work great for you. Please see my pictures for details.
US shipping and handling is $6, and international is $20, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.