A 9 µmsingle-mode fiber optic cable that ends with an LC Duplex connector is required for connecting each port on this feature to the selected device. If multimode fiber optic cables are being reused, a pair of Mode Conditioning Patch cables is required, with one cable for each end of the link. 

For supported distances, see Table 4-8 on page 189. 

## OSA-Express6S GbE SX 

The OSA-Express6S GbE SX feature (FC 0423) includes one PCIe adapter and two ports. The two ports share a channel path identifier (CHPID type OSD). The ports support attachment to a 1 Gbps Ethernet LAN. Each port can be defined as a spanned channel and shared among LPARs and across logical channel subsystems. 

The OSA-Express6S GbE SX feature supports the use of an LC Duplex connector. Ensure that the attaching or downstream device has an SX transceiver. The sending and receiving transceivers must be the same (SX-to-SX). 

A multi-mode fiber optic cable that ends with an LC Duplex connector is required for connecting each port on this feature to the selected device. 

For supported distances, see Table 4-8 on page 189. 

## OSA-Express6S 1000BASE-T Ethernet feature 

This feature (FC 0426) occupies one slot in the PCIe+ I/O drawer. It features two ports that connect to a 1000 Mbps (1 Gbps) or 100 Mbps Ethernet LAN. Each port has an SFP with an RJ-45 receptacle for cabling to an Ethernet switch. The RJ-45 receptacle is required to be attached by using an EIA/TIA Category 5 or Category 6 UTP cable with a maximum length of 100 meters (328 feet). The SFP allows a concurrent repair or replace action. 

The OSA-Express6S 1000BASE-T Ethernet feature supports auto-negotiation when attached to an Ethernet router or switch. If you allow the LAN speed and duplex mode to default to auto-negotiation, the OSA-Express port and the attached router or switch auto-negotiate the LAN speed and duplex mode settings between them. They then connect at the highest common performance speed and duplex mode of interoperation. If the attached Ethernet router or switch does not support auto-negotiation, the OSA-Express port examines the signal that it is receiving and connects at the speed and duplex mode of the device at the other end of the cable. 

The OSA-Express7S 1000BASE-T Ethernet feature can be configured as CHPID type OSC, OSD, or OSE. Non-QDIO operation mode requires CHPID type OSE. 

Notes:  Consider the following points: 

GLYPH<SM590000> CHPID type OSM is not supported on z15 for user configurations. It is used only in DPM mode for internal management. 

GLYPH<SM590000> CHPID types OSN and OSX are not supported on z15. 

The following settings are supported on the OSA-Express6S 1000BASE-T Ethernet feature port: 

GLYPH<SM590000> Auto-negotiate 

GLYPH<SM590000> 100 Mbps half-duplex or full-duplex 

GLYPH<SM590000> 1000 Mbps full-duplex 

