ADLINK aTCA-6250 - Manual (Page 72)

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PORT 1A Link Speed
Port 1A is designed to link onboard PCIe x8 Ethernet. This item is for configuring the
link speed to x8 device.
IOU2 – PCIe Port
IOU2 can be configured to x4x4x4x4 (if RTM has two x4 PCIe devices) or x4x4x8 (if
RTM has one x8 PCIe device)
PORT 2A Link Speed
Port 2A is designed to link onboard PCIe x4 Ethernet. It provides the link to RTM
base channel. This item is for configuring the link speed to x4 device.
PORT 2B Link Speed
Port 2B is designed to link onboard PCIe x4 Ethernet. It provides the link to front GbE
ports. This item is for configuring the link speed to x4 device.
PORT 2C Link Speed
Port 2C is designed to link onboard PCIe x4/x8 Ethernet. It provides the link to RTM.
This item is for configuring the link speed to x4/x8 device.
PORT 2D Link Speed
Port 2D is designed to link onboard PCIe x4 Ethernet. It will not show in setup screen
if IOU2 port is configured to x4x4x8. It provides the link to RTM base channel. This
item is for configuring the link speed to x4 device.