Meet the Connector: Nano-D Nano-D connectors, along with micro-D connectors, were developed in the 1970s as a variation of D-sub (D-subminiature) connectors. ITT Cannon (formerly Cannon) holds the trademark for the D-sub and its smaller variants, although other companies have since designed their own versions. Like the micro-D and D subs connectors before it, the … Continue reading What are Nano-D connectors?