Due to a defect identified in the “Ultracompact” USB Power Adapters included with all iPhone 3G units sold in the U.S., Japan, Canada, Mexico, and six Latin American countries, and sold separately in these and four others, Apple has launched an exchange program in which customers can return their adapters for a new, redesigned version. The program’s site states: “under certain conditions the new ultracompact Apple USB power adapter’s metal prongs can break off and remain in a power outlet, creating a risk of electric shock. We have received reports of detached blades involving a very small percentage of the adapters sold, but no injuries have been reported…. Users with ultracompact power adapters should immediately stop using them until they exchange them for a new, redesigned ultracompact adapter.” The page also states that if the user’s adapter has a single green dot near the prongs, they already have the redesigned adapter and will not need a replacement. According to the program page, replacement adapters will be available starting October 10, and the company will offer replacements via the web, or through its retail stores.