SEL no longer produces the SEL-2726U. We recommend selecting the SEL-2725 Five-Port Ethernet Switch in place of the SEL-2726U. The SEL-2725 is an unmanaged five-port switch and copper-to-fiber-optic media converter.
SEL will continue to support and offer a warranty for the SEL-2726U.
Replacement product: SEL-2725
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.