GTMax USB to RS232 Serial (DB9 and DB25 Male Adapter) with A Driver CD - 3FT USB to Parallel DB9 Male and DB25 Female to Male Printer Cable. Includes one USB 2.0 to 9-pin Serial Male Adapter and one 9-pin Serial female to 25-pin Male Adapter. Fully Plug-Play compatible. Support over 1Mbps data transfer rate.&lt;br&gt; USB A Male connector to DB9 Male and DB25 Female to Male.