MetroCon

MetroPort is a 25-pin connector that used for charging and syncing data and files (USB 1.1 and 2.0) to older TheoryPhone devices prior to TheoryPhone X, Portosic Digital devices prior to sixth generation, first generation Portosic Touch, TheoryPDA, and TheoryPDA Style. It was first released in 1996 and discontinued and replaced by faster 12-pin USB 2.0-based X-Port charging and syncing connector that was introduced in 2006.