This feature provides one long - wavelength 1 - Gbps FICON adapter, with an SC Duplex connector, for the attachment of 3590 Tape Drives through the Model A60 to a FICON host system long wave channel utilizing a 9 - micron single mode fiber cable. The total cable length cannot exceed 10km (up to 20km with RPQ. The 1 - Gbps speed FICON attachment supports up to 64 logical channels.