Extended Mode is a new feature on the SwitchBlade x908 (available from Allied Telesis AlliedWare Plus TM version 5.4.2) to increase the performance of the switch. These improvements make the product more suitable for large Layer 2 networks or core routing applications.<br><br>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 ideal for the job.