Tripp Lite's AT style serial adapter has gold plated connectors and will connect a serial device with a DB25 connection to a DB9 cable or port. Gold plated copper contacts provide maximum conductivity and keep data loss to a minimum. 28 AWG stranded tinned copper conductors are individually insulated in polypropylene. This minimizes cross talk and ensures high-speed, error-free transmission. Tripp Lite warrants this product to be free from defects in materials and workmanship for life.