Intel X520 and X540-T2 Dual Port 10 GbE Adapters for IBM System x
3
Supported transceivers and direct-attach cables
The Intel X520 Dual Port 10GbE SFP+ Adapter and X520 Dual Port 10GbE SFP+ Embedded Adapter
have two empty SFP+ cages that support SFP+ SR transceivers and Twinax direct attached copper
cables, as listed in Table 2 and Table 3.
Table 2. Supported SFP+ transceivers
Part number
Feature code
Description
Optical Transceivers
44W4408
4942
10GbE 850 nm Fiber SFP+ Transceiver (SR)
49Y4216
0069
Brocade 10Gb SFP+ SR Optical Transceiver
46C3447
5053
IBM SFP+ SR Transceiver (10Gb)
49Y4218
0064
QLogic 10Gb SFP+ SR Optical Transceiver
Table 3. Supported direct attach cables
Part number
Feature code
Description
Active DAC/Twinax cables
95Y0323
A25A
1m IBM Active DAC SFP+ Cable
95Y0326
A25B
3m IBM Active DAC SFP+ Cable
95Y0329
A25C
5m IBM Active DAC SFP+ Cable
Passive DAC/Twinax cables
00D6288
A3RG
.5m IBM Passive DAC SFP+ Cable
90Y9427
A1PH
1m IBM Passive DAC SFP+ Cable
90Y9430
A1PJ
3m IBM Passive DAC SFP+ Cable
90Y9433
A1PK
5m IBM Passive DAC SFP+ Cable
00D6151
A3RH
7m IBM Passive DAC SFP+ Cable
Features
The Intel X520 and X540-T2 adapters have the following features:
Load balancing on multiple processors, which increases performance on multiprocessor systems by
efficiently balancing network loads across processor cores when used with Receive Side Scaling from
Microsoft or Scalable I/O on Linux.
Header Splits and Replication in Receive helps the driver focus on the relevant part of the packet
without needing to parse it.
Multiple queues allow packet handling without the waiting/buffer overflow, which provides efficient
packet prioritization.
