The SEL-2910 Port Isolator is no longer available for purchase. SEL recommends selecting one of our multimode fiber-optic transceivers in place of the SEL-2910. SEL will continue to support and warranty the SEL-2910.
Replacement product: Multimode Fiber-Optic Transceivers
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.