The XEM2-4QS provides 4 x 40G QSFP+ ports per module, enabling up to 32 40G ports per chassis. These ports can also be configured as stacking links for a high-capacity backbone ideal for distributed resilient networks. Delivers a scalable network with superior flexibility, to meet network demands both now and well into the future Eliminate bottlenecks with a high-capacity 2.6 Terabit fabric, or up to 10 Terabits when stacked (stacking available in a future release) Hot-swappable expansion modules (XEMs) support a variety of fiber and copper Enjoy powerful network management with Allied Telesis Autonomous Management Framework (AMF) to simplify and automate your everyday tasks