D-Link DXS-3600-EM-4QXS 10G Concentrator

4 x 40Gbps QSFP+ Expansion Module for DXS-3600-32S
– 4 x 40Gbps QSFP+ Ports
– Longer distance stacking by connecting 40G transceivers and fibre cables
– Up to 160G stacking bandwidth
– Used for the DXS-3600-32S