Eladó a címben említett switch,

c3550#sh ver
Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(55)SE10, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 11-Feb-15 13:12 by prod_rel_team
Image text-base: 0x00003000, data-base: 0x0160940C
ROM: Bootstrap program is C3550 boot loader
c3550 uptime is 4 minutes
System returned to ROM by power-on
System restarted at 19:57:38 CET Sun Jan 10 2021
System image file is "flash:/c3550-ipservicesk9-mz.122-55.SE10/c3550-ipservicesk9-mz.122-55.SE10.bin"

Cisco WS-C3550-24 (PowerPC) processor (revision L0) with 65526K/8192K bytes of memory.
Processor board ID CAT0812Y04N
Last reset from warm-reset
Running Layer2/3 Switching Image
Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface
Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
384K bytes of flash-simulated NVRAM.
Base ethernet MAC Address: 00:0F:8F:AA:75:00
Motherboard assembly number: 73-5700-11
Power supply part number: 34-0966-04
Motherboard serial number: CAT081204RB
Power supply serial number: LIT080609PG
Model revision number: L0
Motherboard revision number: A0
Model number: WS-C3550-24-SMI
System serial number: CAT0812Y04N
Configuration register is 0x10F