show inventory

/system routerboard> print 

[admin@MikroTik] /system routerboard> print  
       routerboard: yes
        board-name: hAP ac lite
             model: RB952Ui-5ac2nD
     serial-number: BEBE0AF7B3EB
     firmware-type: qca9531L
  factory-firmware: 6.43.10
  current-firmware: 6.44.4
  upgrade-firmware: 6.44.4