Netgear AGM731F Compatible GBIC 1000mbps 850nm (2-Pack)
1000 BASE-SX Gigabit Full Duplex Ethernet SFP GBIC with LC fiber optic cable interface.  Meets and exceeds Netgear AGM731F specs (supports FCAL in addition to 1000 BASE-SX, unlike Netgear branded GBICs).I have done extensive high bandwidth and latency testing in mixed environments with original Netgear AGM731Fs and Netgear switches.  Each unit is physically inspected, and tested at full duplex at the link layer level in Netgear equipment for full operability.