generate questions: The dock connector also allowed the iPod to connect to accessories, which often supplement the iPod's music, video, and photo playback. Apple sells a few accessories, such as the now-discontinued iPod Hi-Fi, but most are manufactured by third parties such as Belkin and Griffin. Some peripherals use their own interface, while others use the iPod's own screen. Because the dock connector is a proprietary interface, the implementation of the interface requires paying royalties to Apple.
Which iPod accessory was made by Apple but is no longer produced? {sep_token} What are two companies that make iPod accessories? {sep_token} What part of the iPod is needed to communicate with peripherals? {sep_token} What is the condition for third parties using the dock connector? {sep_token} The majority of peripherals for iPod are produced by what kinds of companies? {sep_token} What's the name of the now-discontinued accessory manufactured by Apple, that connected via the iPod's dock connector? {sep_token}