Welcome
On our SYS-821GE-TNHR the PLX information is not found with redfish/sum.Commands used were:./sum -c GetPCIeSwitchInfo
and Redfishcurl -X GET https://{BMC_IP}/redfish/v1/UpdateService/FirmwareInventory/Switchboard_1_PCIeSwitch_1 -u "{BMC_user}:{BMC_PW}" -k