Allied Telesis XEM high speed expansion modules offer a high degree of flexibility which future-proofs your network investment against changes in network infrastructure, topologies, and physical link requirements. XEM expansion modules can be used in a variety of configurations to provide tailored solutions that meet wide-ranging physical networking requirements. Whatever the network requirements, Allied Telesis has a XEM that is right for the job. Allied Telesis AT-XEM-12SV2 Expansion Module is one of many Networking Transceivers & Converters available through Office Depot. Made by Allied Telesis.