Add two extra serial ports to the back of your PC from your motherboard&lt;br/&gt;&lt;br/&gt;The PLATE9M2P16 Dual Port Serial Plate adds two DB9 serial ports to the rear panel of a computer connecting to two IDC10 header connectors on the motherboard.&lt;br/&gt;&lt;br/&gt;Constructed of high quality components this durable dual port serial bracket is backed by StarTech.coms lifetime warranty.&lt;br/&gt;&lt;br/&gt;Please refer to this product&#39;s Technical Specifications to ensure compatibility with your motherboard.&lt;br/&gt;&lt;br/&gt;The StarTech.com Advantage&lt;br/&gt;&lt;br/&gt;- Save space by adding two DB9 serial ports through a single expansion slot on the back of your PC&lt;br/&gt;- Backed by StarTech.com lifetime warranty