Hello Neo,
use sh inventory like in this device from our network
sh inventory
NAME: "1", DESCR: "WS-C3750G-24PS"
PID: WS-C3750G-24PS-S , VID: V05, SN: FOC1042Y06D
NAME: "GigabitEthernet1/0/25", DESCR: "1000BaseSX SFP"
PID: , VID: , SN: AGS091502CD
NAME: "GigabitEthernet1/0/26", DESCR: "1000BaseSX SFP"
PID: , VID: , SN: AGS100455A7
NAME: "GigabitEthernet1/0/27", DESCR: "1000BaseSX SFP"
PID: , VID: , SN: AGS091503S7
NAME: "GigabitEthernet1/0/28", DESCR: "1000BaseSX SFP"
PID: , VID: , SN: AGS091502DU
Hope to help
Giuseppe