This AT Serial Adapter converts a DB25 male serial port on a PC to a DB9 male serial port. PRODUCT FEATURES: Gold plated copper contacts provide maximum conductivity and keep data loss to a minimum; Aluminum Undermold shielding helps to meet FCC requirements on EMI/RFI interference; State-of-the-art-wiring design ensures 100% compatibility with all devices 100% of the time; 28 AWG stranded tinned copper conductors are individually insulated in polypropylene to minimize cross talk, ensuring high-speed, error-free transmission; PVC premold encapsulates individual conductors to ensure electrical isolation and relieve stress; Ground indents provide excellent conductivity and retention with mating connector.