Cisco Catalyst Interface Modules
| Manufacturer Part Number | Description | |
| WS-X2924-XL-V | 4 Port 100Base-FX Module Via SC Connectors, ISL/802.1Q |  |
| WS-X3004 | Catalyst 3000 Expansion Module | |
| WS-X3500-XL | Catalyst 3500 Series GigaStack GBIC Module | |
| WS-X4448-GB-SFP | Catalyst 4500 48 Port Gigabit Ethernet 1000Base-X SFP | |
| WS-G5486 | Catalyst Series 1000Base-LX Long Haul GBIC Module MM/SM | |
| WS-U5531-FETX | Dual Port 100Base-TX RJ-45 Uplink Module for Supervisor III Engine | |
| WS-X2821 | Single Port 100Base-FX Module | |