The Sun StorageTek 4Gb Fibre Channel (FC) Network Express Module (NEM) does not allow normal data transmission on an optical link unless it is connected to another similar or compatible FC product (that is, multimode to multimode).
The following table lists connector and cabling restrictions for the StorageTek FC NEM. Use multimode fiber-optic cable, intended for short-wave lasers, that adheres to these specifications and restrictions.