Tripp-Lite's AT Style Serial Adapter Has Gold Plated Connectors And Will Connect A Serial Device With A DB9 Connection To A DB25 Cable Or Port. PVC premold encapsulates individual conductors to ensure electrical isolation and relieve stress. 28 AWG stranded tinned copper conductors are individually insulated in polypropylene to minimize cross talk, ensuring high-speed, error-free transmission. Tripp Lite offers a Lifetime replacement warranty on all cable products.