HP 629135-B21 Specification

The HP Ethernet 1Gb 4-port 331FLR Adapter for select HP ProLiant Gen8 rack servers features the next generation of Ethernet
integration, offering a single-chip solution in a FlexibleLOM form factor, which offers the option for future upgrades to 10GbE
networking speeds. It delivers full line-rate performance across all ports with low power consumption.

The HP 331FLR is ideal for virtualization, security, server consolidation, network segmentation, and other applications requiring
maximum throughput and port density. The total aggregate throughput of 4Gb meets the needs of customers desiring high bandwidth.

The HP 331FLR supports advanced features such as Large Send and Receive offload capability, TCP checksum and segmentation, VLAN
tagging, MSI-X, jumbo frames, IEEE 1588, HP Sea of Sensors 3D and virtualization features such as VMware NetQueue and Microsoft
VMQ.

Support for HP Sea of Sensors 3D Technology enhances server performance while reducing energy use and expense.

Models

HP Ethernet 1Gb 4-port 331FLR Adapter

629135-B21

QuickSpecs

HP Ethernet 1Gb 4-port 331FLR Adapter

Overview

DA - 14214 North America — Version 9 — September 10, 2013

Page 1

Kit Contents

HP 331FLR FlexibleLOM adapter
Quick install card
Product warranty statement

QuickSpecs

HP Ethernet 1Gb 4-port 331FLR Adapter

Overview

DA - 14214 North America — Version 9 — September 10, 2013

Page 2

Servers

ProLiant DL (rack-optimized)

:

HP ProLiant DL160 Gen8
HP ProLiant DL360p Gen8
HP ProLiant DL380p Gen8
HP ProLiant DL385p Gen8
HP ProLiant DL560 Gen8

ProLiant SL (scalable)

:

HP ProLiant SL210t Gen8
HP ProLiant SL230s Gen8
HP ProLiant SL250s Gen8
HP ProLiant SL270s Gen8

NOTE:

This is a list of supported servers. Some servers may be discontinued.

QuickSpecs

HP Ethernet 1Gb 4-port 331FLR Adapter

Compatibility

DA - 14214 North America — Version 9 — September 10, 2013

Page 3

Performance

Product Features

FlexibleLOM for select HP Gen8 Rack servers
Industry-leading hardware integration for low power
Quad-port 1GbE provides up to 8Gb/s full duplex throughput per adapter
Energy Efficient Ethernet (EEE) support
Optimized for virtual servers
Improved small packet performance
Support for Preboot eXecution Environment (PXE)

Quad-port 1 Gigabit
Ethernet Throughput

The HP 331FLR adapter provides 2,000 Mbps full duplex Ethernet transfer rate per port (8 Gbps aggregate
full duplex) delivers outstanding network performance that improves response time and removes
bottlenecks. With a theoretical throughput of 1 Gbps each direction, the x4 PCI Express bus is more than
capable of supporting the 331FLR's four gigabit ports. Four ports on a single adapter are ideal for high
density, I/O slot constrained servers, virtualization and security, applications, server consolidation, and
increased network segmentation. The total aggregate throughput of 4Gbps also meets the needs for
customers desiring high bandwidth but are not yet ready to move to 10 Gigabit Ethernet.

NOTE:

Port enumeration on the 331FLR is from the bottom up, i.e. the port closest to the gold teeth is port

#1 and the port near the top of the adapter is port #4

Jumbo Frames

The HP 331FLR FlexibleLOM supports jumbo frames, permits up to a 9K byte (KB) transmission unit (MTU)
when running Ethernet, which is over five times the size of standard 1500-byte Ethernet frame. Jumbo
frames can help achieve higher throughput and better CPU utilization and are particularly useful for
database transfer and tape backup operations.

MSI and MSI-X

Up to 17 Message Signaled Interrupt (Extended) provides performance benefits for multi-core servers by
load balancing interrupts between CPUs/cores.

802.1Q VLANs

IEEE 802.1Q virtual local area network (VLAN) protocol allows each physical port of the HP 331FLR to be
separated into multiple virtual NICs for added network segmentation and enhanced security and
performance. VLANs increase security by isolating traffic between users. Limiting the broadcast traffic to
within the same VLAN domain also improves performance.

TCP/IP Stateless
Offloading

For overall improved system response, the HP 331FLR supports TCP, IP, UDP checksum offload, Large
Send Offload (LSO), TCP, and Segmentation Offload (TSO). These features optimize host efficiency, leaving
the CPU available for other duties

Time synchronization
(IEEE 1588)

Hardware assist for IEEE 1588 and IEEE 802.1AS time synchronization implementations for time sensitive
applications.

Optimized for
Virtualization

I/O Virtualization support for VMware NetQueue and Microsoft VMQ help meet the performance demands
of consolidated virtual workloads.

QuickSpecs

HP Ethernet 1Gb 4-port 331FLR Adapter

Standard Features

DA - 14214 North America — Version 9 — September 10, 2013

Page 4