Product UPC: 014445531609 This Cisco XENPAK-10GB-CX4 compatible 10GBase-CX4 XENPAK Transceiver operates over Copper, with a maximum reach of 100m connected via a CX4 connector, built to meet or exceed the 's specifications, and comply with MSA (Multi-Source Agreement) standards. All products are 100% functionally tested, and are guaranteed compatible. Our Transceivers (GBIC, SFP, SFP+, X2, XFP and XENPAK) are 100% compliant with their designed networking application, and are factory programed with specific configuration data requir...