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. 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. 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: The following settings are supported on the OSA-Express6S 1000BASE-T Ethernet feature  port: 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.  GLYPH<SM590000> Auto-negotiate GLYPH<SM590000> 100 Mbps half-duplex or full-duplex GLYPH<SM590000> 1000 Mbps full-duplex OSA-Express6S GbE SX  OSA-Express6S 1000BASE-T Ethernet feature 186  IBM z15 (8561) Technical Guide