1 Port PCI Express 10/100 Ethernet Network Interface Adapter Card

Add a 10/100Mbps Ethernet port to a desktop computer through a PCI Express slot

Product ID: PEX100S

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  • Single 10/100Mbps RJ45 Ethernet port
  • Compliant with IEEE802.3 CSMA/CD, 802.3 10Base-T and 100Base-TX standards
  • Crossover Detection & Auto-Correction (Auto-MDIX)
Your price
$20.99USD

In stock: US: 380 | CA: 51

Where to buy StarTech.com products
Where to buy

This PCI Express based 10/100 Ethernet Card provides a simple way to connect a PCIe enabled server or workstation to a 10/100 Ethernet network and offers a broad range of features and functions, including support for both Full and Half Duplex operation as well as Wake On LAN (WOL) Power Management.

The PEX100S Ethernet Card includes both standard and low profile brackets and is compatible with most mATX (Slimline) and ATX system form factors, and features Auto MDI/MDIX automatic configuration, which helps to simplify installation and configuration.

Applications

  • Replacement Ethernet card for a home or office desktop computer
  • Adding Ethernet network connectivity for broadband Internet access to an old desktop computer
  • Adding a second or redundant network connection for a workstation or server

The StarTech.com Advantage

  • Cost effective and simple Ethernet networking for a desktop computer systems
  • Backed by a StarTech.com lifetime warranty and free lifetime technical support

Partner Numbers

  • Tech Data 10920251
  • Ingram Micro USA R35670
  • ASI 84795
  • D&H PEX100S
  • SYNNEX US STA-PEX100S
  • UPC 065030828185

Compatibility

  • Windows 8 logo
  • Linux logo
  • Windows Server 2012 logo
  • Windows 10 logo
  • Windows Server 2016 logo
  • Windows Server 2019 logo
Windows® 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016, 2019
Linux 2.6.x to 4.11.x LTS Versions Only

Specifications

Warranty Information Warranty Lifetime
Connector(s) Connector Type(s) 1 - PCI Express x1
External Ports 1 - RJ-45
Hardware Ports 1
Interface RJ45 (10/100 Ethernet)
Bus Type PCI Express
Card Type Standard Profile (LP bracket incl.)
Chipset ID Realtek - RTL8101E
Indicators LED Indicators 1 - Link Status
Packaging Information Package Height 1.2 in [30 mm]
Package Length 5.7 in [14.4 cm]
Shipping (Package) Weight 0.3 lb [0.1 kg]
Package Width 6.8 in [17.2 cm]
Performance Maximum Data Transfer Rate 100 Mbps
Compatible Networks 10/100 Mbps
Physical Characteristics Weight of Product 1.1 oz [32 g]
Product Length 3.6 in [9.2 cm]
Product Width 4.7 in [120 mm]
Product Height 0.8 in [2.1 cm]
Software OS Compatibility Windows® 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016, 2019
Linux 2.6.x to 4.11.x LTS Versions Only
What's in the Box Included in Package 1 - 10/100 PCI-Express Ethernet Card
1 - Low Profile Bracket
1 - Driver CD
1 - Instruction Manual

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Drivers/Downloads

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We are always ready to assist you with any questions you may have.

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We are always ready to assist you with any questions you may have.

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Frequently Asked Questions

Installation

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. Select the appropriate folder for your operating system.
  3. Right-click Setup.exe. 
  4. Click Run as Administrator.

Note: If the Run as Administrator option is not available, you might be attempting to run the installer from within the zipped file. Extract the files using the instructions in Step 2.

  1. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  2. Your computer will automatically complete the driver installation and your device should be ready to use.

Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).

To install the driver:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. Select the appropriate folder for your operating system.
  3. Double-click Setup.exe.
  4. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  5. Your computer will automatically complete the driver installation and your device should be ready to use.

Troubleshooting

When you troubleshoot issues with a network adapter, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Ethernet cables
  • Network devices
  • Computer system

To test your setup components, try the following:

  • Use the Ethernet cables, network devices, and computer system in another setup to see if the problem is with the components or the setup.
  • Use different Ethernet cables, network devices, and a different computer system in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.
  • Use short cables when you are testing.

When you test the Ethernet cables, network devices, and computer system, it is recommended that you do the following:

Sometimes an on-board network interface card (NIC) conflicts with a new NIC.  In these cases it is best to disable the on-board NIC.

The best way to disable your on-board NIC is to go into your BIOS and disable it there if possible.  To do this, consult your motherboard manual.

You can also disable any NIC in Windows.  Here is how you do this:

First click Start, or, in Windows 10 and 8, hold down the Windows key and press X.  Then click Control Panel.

Windows 10

  1. Click Network and Internet.
  2. Click Network and Sharing Center.
  3. On the left, click Change adapter settings.
  4. Right-click the NIC that you would like to disable and select Disable.

Windows 8

  1. Click Network and Sharing Center.
  2. On the left, click Change adapter settings.
  3. Right-click the NIC that you would like to disable and select Disable.

Windows 7

  1. Click Network and Internet.
  2. Click Network and Sharing Center.
  3. On the left, click Change adapter settings.
  4. Right-click the NIC that you would like to disable and select Disable.

Windows Vista

  1. Click Network and Sharing Center.
  2. On the left, click Manage network connections.
  3. Right-click the NIC that you would like to disable and select Disable.

Windows XP

  1. Click Network Connections.
  2. Right-click the NIC that you would like to disable and select Disable.

If you are experiencing speed or connectivity issues, it is best to set a specific speed at half or full duplex in your settings.  You can set your network adapter to perform at a certain speed, but the device that the adapter is connected to (whether it is a router, switch, or computer) must also be able to perform at the same speed.

Note: You must log in as the local administrator before you continue.

To open Device Manager:

  • Press Windows key + R.
  • Type devmgmt.msc.
  • Click OK.
  1. Open the Networking adapters section.
  2. Right-click the network adapter that you want to change and select Properties.
  3. Click the Advanced tab.
  4. Scroll down to Speed & Duplex. By default, it is set to Auto-Negotiate. Select any of the speeds that you see in the list.
  5. Click OK and restart your computer.

How To

StarTech.com does not support a Preboot Execution Environment (PXE) as this requires third-party software. However, our devices can be used as long as the following conditions are met:

  1. The BIOS must support PXE.
  2. The BIOS must see the card.
  3. The environment must have drivers for the chipset used in the card.
  4. If using a USB networking card, the environment must have support for USB devices as well.

To confirm that Windows detects your expansion card, complete the following:

  1. Press the Windows key+R, type devmgmt.msc, and press Enter.
  2. In Device Manager, under the appropriate heading, confirm that your expansion card is listed and that there isn't an exclamation mark next to it.  For example, a USB controller card would be under Universal Serial Bus controllers.

Your expansion card is listed according to the name of the chipset. To determine the name of the chipset of your expansion card, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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