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Thanks both.. I got the answer.
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Hi ;<br />
We got the Cisco WS-C3750X-12S-S 3750-X Series 12 port switch wrongly ordered and we are finding that it is all fibre switch. We were told to use C3KX-NM-1G Four GbE network module. Please let me know if it is ALL COPPER and I do not require any gbics for this module.<br />
<br />
Any other idea of expanding this switch to Copper port is highly appreciated. Any thoughts or suggestions.
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Hi ;
We got the Cisco WS-C3750X-12S-S 3750-X Series 12 port switch wrongly ordered and we are finding that it is all fibre switch. We were told to use C3KX-NM-1G Four GbE network module. Please let me know if it is ALL COPPER and I do not require any gbics for this module.

Any other idea of expanding this switch to Copper port is highly appreciated. Any thoughts or suggestions.

Cisco WS-C3750X-12S-S 3750-X Series switch

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.