ITEM NAME:Extender F/F female DB9 female to RJ45 RS232 Female Adapter Connector Converte Z a.imagelink a:hover.imagelink {color:#db3606;.Connector Type: RJ45 Female, RS232 female connector. These adapters are used to run RS232 data over long distances (up to 100m) using UTP Cat 5e cable to bridge the gap. Size: 5.5 x 3.5 x 1.5cm.