The following is sample output for a standalone ExtremeSwitching X440-G2 series switch:
X440G2-48p-10G4.1 # show version detail
Switch      : 800618-00-02 1530G-00048 Rev 2.0 BootROM: 1.0.1.7    IMG: 22.2.1.2
              FPGA: 1.1.44.0 PLD1: 1.0.10.0
PSU-1       : Internal Power Supply
PSU-2       :
Image   : ExtremeXOS version 22.2.1.2 by release-manager
          on Wed Feb 15 17:52:45 EST 2017
BootROM : 1.0.1.7
Diagnostics : 5.10
Certified Version : EXOS Linux  3.18.24, FIPS fips-ecp-2.0.12
Switch        PCB Info: EVTFC48.2A1G
Subsystem     PCB Info: EVTFC48.2A1G
      The following is sample output for a stack of ExtremeSwitching X440-G2 and X620 switches series switches:
Slot-1 Stack.3 # show version detail
Slot-1      : 800617-00-00 1443G-00572 Rev 0.0 BootROM: 1.0.1.9    IMG: 22.2.1.2
              FPGA: 1.1.42.0 PLD1: 1.0.10.0
Slot-2      : 800630-00-00 1510G-00210 Rev 0.0 BootROM: 1.0.1.9    IMG: 22.2.1.2
              FPGA: 1.1.42.0 PLD1: 1.0.10.0
Slot-3      : 800613-00-00 1449G-00185 Rev 0.0 BootROM: 1.0.1.9    IMG: 22.2.1.2
              FPGA: 1.1.42.0 PLD1: 1.0.10.0
Slot-4      : 800632-00-00 1507G-00414 Rev 0.0 BootROM: 1.0.1.9    IMG: 22.2.1.2
              FPGA: 1.1.42.0 PLD1: 1.0.10.0 PLD2: 1.0.10.0
Slot-5      :
Slot-6      :
Slot-7      :
Slot-8      :
Image   : ExtremeXOS version 22.2.1.2 by release-manager
          on Wed Feb 15 17:52:45 EST 2017
BootROM : 1.0.1.9
Diagnostics : 5.10
Certified Version : EXOS Linux  3.18.24, FIPS fips-ecp-2.0.12
Slot-1        PCB Info: EVTFC48.0A1G
Subsystem     PCB Info: EVTFC48.0A1G
Slot-2        PCB Info: EVTBF16P0A1G H11154021
Subsystem     PCB Info: EVTBF16P0A1G H11154021
Slot-3        PCB Info: EVTFC12.0A1G
Subsystem     PCB Info: EVTFC12.0A1G
Slot-4        PCB Info: EVTBF10X0A1G
Subsystem     PCB Info: EVTBF10X0A1G
      5520-24W-EXOS.3 # show version detail
Switch          : 800992-01-03 2011G-00108 Rev 03 BootROM: 2.2.1.3    IMG: 31.1.0.631
                  CPLD: 1.0.22 UC: 1.0.12
Image   : ExtremeXOS version 31.1.0.631 by release-manager
          on Tue Sep 1 13:58:24 EDT 2020
BootROM : Default 2.2.1.3  Alternate 2.2.1.3
Diagnostics :
Certified Version : EXOS Linux 4.14.170, Extreme Networks FIPS Object Module 2.0.16a
Build Tools Version : exos-arm64-sdk-3.0.3.1.0