Check the listing for details. Agilent GbE/4 4Port 1000BASESX Router Tester E7904A. Condition: Used. Listed at 109.00 USD. PN: E7904A. Up to 32 modules can be utilized in a single system, providing an unparalleled Internet-scale test solution. Ports : One (1) BNC Trigger, One (1) BNC Event and One (1) Clock. Network Ports : Four (4) 1000Base-SX Gigabit Ethernet and One (1) RJ-45 to Hub.