PCIe3 2-port 10 Gb NIC & RoCE SR/Cu adapter (FC EC2R and EC2S; CCIN 58FA)

Learn about the specifications and operating system requirements for feature code (FC) EC2R and EC2S adapters.


FC EC2R and EC2S are both the same adapter with different feature codes. FC EC2R is a low-profile adapter and FC EC2S is a full-height adapter.

The PCIe3 2-port 10 Gb NIC & RoCE SR/Cu Adapter is a PCI Express (PCIe) generation 3 (Gen3) x8 adapter. The adapter provides two 10 Gb SFP+ ports and supports both the Ethernet network interface controller (NIC) function and RDMA over Converged Ethernet (RoCE). The adapter can support significantly greater bandwidth with low latency using RoCe. It also minimizes CPU overhead by more efficiently using memory access. This offloads the CPU from I/O networking tasks, improving performance and scalability.

Figure 1. PCIe3 LP 2-port 10 Gb NIC & RoCE SR/Cu Adapter (FC EC2R)
PCIe3 2-port 10 Gb NIC & RoCE SR/CU Adapter
Figure 2. PCIe3 2-port 10 Gb NIC & RoCE SR/Cu Adapter (FC EC2S)
PCIe3 2-port 10 Gb NIC and RoCE SR/CU Adapter


Adapter FRU number
Wrap Plug FRU number
74Y7010 (Twinax wrap plug)
12R9314 (Optical wrap plug)
I/O bus architecture
PCIe3 x8
Slot requirement
For details about slot priorities, maximums, and placement rules, see PCIe adapter placement rules and slot priorities and select the system you are working on.
3.3 V, 12 V
Form factor
Short, low-profile (FC EC2R)
Short, with full-height tailstock (FC EC2S)
Attributes provided
RDMA over Converged Ethernet (RoCE)
Dual port 10 Gb Ethernet network connectivity
Supports 10 Gb Ethernet SFP+ connectivity
Supports 10 Gb SFP+ SR connectivity with a 10 Gb optical transceiver (IBM® P/N 77P9336, purchased separately)
AIX® Network Installation Management (NIM) support
PCI Express 3.0 (up to 8 GT/s) x8
PCIe Gen 3.0 compliant, 1.1 and 2.0 compatible
IEEE 802.3ae (10 Gb Ethernet), IEEE 802.3ad (Link Aggregation and Failover), IEEE 802.3az (Energy Efficient Ethernet), IEEE 802.1Q/P (VLAN Tagging), IEEE 802.10au (Congestion Notification), IEEE 802.1Qbg, IEEE 802.3Qaz D0.2 (ETS), IEEE 802.1Qbb D1.0 (PFC), IEEE 1588v2 (PTP)
Jumbo frame support up to 9.6 KB
VXLAN and NVGRE Overlay Network offload support
TCP/UDP/IP stateless offload
TCP/UDP checksum offload
TCP segmentation offload
PowerVM SR-IOV support. For more information see, PowerVM® SR-IOV FAQs.
For 10 GbE, IBM® offers Direct Attach Copper (DAC) cables up to 5 M. SFP based transceivers are included on each end of these cables. For more information about adapter cabling, see the Cable and Transceiver information.
IBM® qualifies and supports SFP+ optical transceiver (FC EB46) to install into the adapter. Customers can also use their own optical cabling and SFP+ optical transceiver for the other end. The 10 Gb optical transceiver is capable up to 300 M through the OM3 cable or 82 M through OM2 cable. Either one or both of the adapter’s two SFP+ ports can be populated.

Cable and Transceiver information

Use multimode fiber optic cables with shortwave lasers that adhere to the following specifications:
  • OM3 or OM4: Multimode 50/125 micron fiber, 2000 MHz x km bandwidth
  • OM2: Multimode 50/125 micron fiber, 500 MHz x km bandwidth
  • OM1: Multimode 62.5/125 micron fiber, 200 MHz x km bandwidth

Because core sizes are different, OM1 cables can only be connected to other OM1 cables. For best results, OM2 cables must not be connected to OM3 or OM4 cables. However, if an OM2 cable is connected to an OM3 or OM4 cable, the characteristics of the OM2 cable apply to the entire length of the cables. The following table shows the supported distances for the different fiber optic cable types at different link speeds.

Table 1. Cable type and distance (10 Gb/s)
Rate Cable type and distance
10 Gb/s OM1 OM2 OM3
0.5 m to 33 m (1.64 ft to 108.26 ft) 0.5 m to 82 m (1.64 ft to 269.02 ft) 0.5 meters to 300 meters (1.64 ft to 984.25 ft)
Table 2. Optical transceivers and cables
Feature code Description
EB46 10 Gb optical transceiver (purchased separately)
EN01 10 Gb/s 1 m (3.3 ft) copper active twinax Ethernet cable
EN02 10 Gb/s 3 m (9.8 ft) copper active twinax Ethernet cable
EN03 10 Gb/s 5 m (16.4 ft) copper active twinax Ethernet cable

Operating system or partition requirements

If you are installing a new feature, ensure that you have the software that is required to support the new feature and you must determine any prerequisites that must be met for this feature and the attached devices. For information about operating system and partition requirements, see one of the following topics: