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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)
Full and Half duplex mode support
Link speed and duplex mode auto-negotiation
Link/Activity and 10/100Mbps LED indicators
Supports Wake-on-LAN
Full/Low Profile installation brackets included
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
| Category | Details |
|---|---|
| Compatibility | |
| Operating Systems | Windows® 2000, XP, Vista, 7, 8, 8.1, 10, 11 Windows Server® 2003, 2008 R2, 2012, 2016, 2019 Linux 2.6.x and up - LTS Versions only |
| Specifications | |
| Warranty | Lifetime |
| Connector(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 - RTL8105E |
| Indicators | LED Indicators: 1 - Link Status |
| Packaging Info | |
| Package Height | 30 mm [1.2 in] |
| Package Length | 16.8 cm [6.6 in] |
| Shipping Weight | 120.0 g [4.2 oz] |
| Package Width | 14.2 cm [5.6 in] |
| Package Quantity | 1 |
| Performance | |
| Max Data Rate | 100 Mbps |
| Compatible Networks | 10/100 Mbps |
| Physical | |
| Product Weight | 32 g [1.1 oz] |
| Color | Black |
| Material | Steel |
| Product Length | 92.5 mm [3.6 in] |
| Product Width | 12 cm [4.7 in] |
| Product Height | 2.1 cm [0.8 in] |
| Software | |
| OS Compatibility | Windows® 2000, XP, Vista, 7, 8, 8.1, 10, 11 Windows Server® 2003, 2008 R2, 2012, 2016, 2019 Linux 2.6.x and up - 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 |
| Description | Downloads |
|---|---|
| StarTech Network Card Internal 100 Mbit/s DataSheet | Downloads |
| StarTech Network Card Internal 100 Mbit/s User Manual | Downloads |
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