AddOn 

394791-B21-AO AddOn Gigabit Ethernet Card

Mfg Part Number:  394791-B21-AO  
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Price: $50.72
Quantity:
In Stock: 93
Last Updated: May 22, 2026
No Sales Tax except these states
, PO and Wire.
This is an HP 394791-B21 comparable Gigabit Ethernet PCIe 2.0 x4 network interface card with a single RJ-45 port that complies with IEEE 802.3 standards. It is based on an Intel 82574 chipset and is compatible with a variety of different applications and operating systems, including Windows, Linux and Unix-like systems. Providing 10/100/1000Mbs of network speed, it fully supports high-end servers and various other networking applications. In addition, this card supports high level VLAN filtering. The single RJ-45 port operates over copper patch cable, allowing for an operating distance of 100m. This product includes both half-height and full-height brackets. Our network interface cards are 100% compliant, and offer a cost effective solution for all of your network upgrade needs. With our certification test program, we guarantee your product will work right the first time.
Main Specification
General Information
Manufacturer AddOn
Manufacturer Part Number 394791-B21-AO
Manufacturer Website Address http://www.addoncomputer.com
Brand Name AddOn
Product Name HP Gigabit Ethernet Card
Packaged Quantity 1
Product Type Gigabit Ethernet Card
Technical Information
Chipset Manufacturer Intel
Chipset Model 82574
Interfaces/Ports
Host Interface RJ-45
Host Interface PCI Express 2.0 x4
Total Number of Ports 1
Network (RJ-45) Yes
Number of Network (RJ-45) Ports 1
Media & Performance
Media Type Supported Twisted Pair
Maximum Operating Distance 328.08 ft
Maximum Data Transfer Rate 7.81 Gbit/s
Network & Communication
Network Technology 10/100/1000Base-T
Physical Characteristics
Form Factor Plug-in Card
Height 4.2"
Width 0.8"
Depth 3.7"
Weight (Approximate) 6.40 oz
Miscellaneous
Package Contents
  • Gigabit Ethernet Card
  • Half-height and full-height brackets
Application/Usage Network
Additional Information
  • Compatible OEM: HP
  • Compatible With OEM Part Number(s): 394791-B21
  • Compatible With OEM Part Number For Description: 394791-B21
  • Device Supported Server
    Operating System Compatibility Netware 6.5
    Operating System Compatibility Windows 2000 Advanced Server
    Operating System Compatibility FreeBSD 9.x
    Operating System Compatibility Linux Kernel 2.6.x
    Operating System Compatibility Linux Kernel 2.4.x
    Operating System Compatibility Windows 7 x64
    Operating System Compatibility Windows Server 2003 x64
    Operating System Compatibility Windows 7 x32
    Operating System Compatibility Windows XP Professional
    Operating System Compatibility Windows 2000 Server
    Operating System Compatibility Windows Server 2012
    Operating System Compatibility Windows XP Professional x64
    Operating System Compatibility Windows Vista x64
    Operating System Compatibility Windows 8 x64
    Operating System Compatibility Windows Vista x32
    Operating System Compatibility Windows Server 2003 x32
    Operating System Compatibility Windows Server 2008 x64
    Operating System Compatibility Windows Server 2008 R2
    Operating System Compatibility Linux Kernel 3.x
    Operating System Compatibility Windows 8 x32
    Operating System Compatibility Windows XP x64
    Operating System Compatibility Windows XP
    Operating System Compatibility Windows Server 2008 x32
    Operating System Compatibility Windows Small Business Server 2006
    Country of Origin China
    TAA Compliant No
    Warranty
    Limited Warranty Lifetime

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