Allied Telesis AT-8088/xx (MT and SC) - Manual (Page 91)

AT-8000 Series Fast Ethernet Switches Installation Guide
91
HSSDC Connector
The Hyper Speed Serial Data Cable (HSSDC) connector is part of the
AT-STACKM stacking kit. Figure 45 illustrates an HSSDC connector.
Figure 45 HSSDC Connector