This is a Cisco Catalyst 3550 series inline power 24 Fast ethernet port POE switch, model number WS-C3550-24PWR-SMI. It has highest IOS available for this model. Show version: Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(44)SE6, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2009 by Cisco Systems, Inc. Compiled Mon 09-Mar-09 20:28 by gereddy Image text-base: 0x00003000, data-base: 0x012A99FC

ROM: Bootstrap program is C3550 boot loader

Switch uptime is 1 minute System returned to ROM by power-on System image file is "flash:/c3550-ipservicesk9-mz.122-44.SE6.bin"

Cisco WS-C3550-24-PWR (PowerPC) processor (revision L0) with 65526K/8192K bytes of memory. Processor board ID CAT0931Z2R7 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

perfect for CCNA CCNP CCIE Let me know if yo need more than 1 as I have few of them.