Altera High-Speed Development Kit, Stratix GX Edition - Manual (Page 50)

5–6 Quartus II Version 3.0 Altera Corporation
Set Up the Board High-Speed Development Kit, Stratix GX Edition User Guide
Figure 5–8. Attach the XCVR XPAK Module
9. Attach the HSSDC2 loopback cables to the HSSDC2 transceiver
connectors at J23 through J32 and J15 through J11 as shown in
Figure 5–9.