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4-port PCIe Gigabit Ethernet network adapter
A quad-port PCI Express Gigabit Ethernet NIC with four independent 10/100/1000Mbps RJ45 ports, 9K jumbo frames and current Realtek RTL8111H controllers.

Key capabilities
Four independent Gigabit ports
Adds four separate 10/100/1000Mbps RJ45 network interfaces through one PCIe slot.
Current RTL8111H controller
The current exact StarTech datasheet identifies Realtek RTL8111H, superseding the older RTL8111G field in the supplied table.
Full-duplex Gigabit networking
Current StarTech product content describes up to 1000Mbps in each direction.
Enterprise multi-network use
Useful for multi-network, server and virtualised environments where multiple physical NICs are required.
What to know before buying
Requires an available PCI Express x4 or larger slot. The current exact StarTech datasheet lists RTL8111H; the supplied older technical table lists RTL8111G, so the current official value is used.
Australian version and manufacturer warranty
This item is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com 2-year manufacturer warranty in Australia.
Please retain your DeviceDeal tax invoice as proof of purchase. Warranty coverage and claims are subject to StarTech.com warranty terms, eligibility requirements and product assessment.
Frequently asked questions
How many network ports does ST1000SPEX43 provide?
What speeds are supported?
What PCIe slot is required?
Which chipset is used in the current exact StarTech datasheet?
Does it support jumbo frames?
Does it support full-duplex networking?
Is a low-profile bracket listed?
What warranty applies in Australia?
(ST1000SPEX43)
Features and highlights
Four independent Gigabit ports
Adds four separate 10/100/1000Mbps RJ45 network interfaces through one PCIe slot.
Current RTL8111H controller
The current exact StarTech datasheet identifies Realtek RTL8111H, superseding the older RTL8111G field in the supplied table.
Full-duplex Gigabit networking
Current StarTech product content describes up to 1000Mbps in each direction.
Enterprise multi-network use
Useful for multi-network, server and virtualised environments where multiple physical NICs are required.
- 4 × Gigabit RJ45
- PCIe x4
- 9K jumbo frames
- 2-year warranty
Specifications
Verified specifications for StarTech ST1000SPEX43.

Warranty Information
| Warranty | 2 Years |
|---|
Hardware
| Bus Type | PCI Express |
|---|---|
| Card Type | Standard Profile |
| Chipset ID | Realtek - RTL8111H (current exact StarTech datasheet) |
| Industry Standards | Compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab |
| Interface | RJ45 (Gigabit Ethernet) |
| Ports | 4 |
Performance
| Auto MDIX | Yes |
|---|---|
| Compatible Networks | 10/100/1000 Mbps |
| Full Duplex Support | Yes |
| Jumbo Frame Support | 9K max. |
| Maximum Data Transfer Rate | 2000Mbps (Full Duplex) |
| Promiscuous Mode | Yes |
Connector(s)
| Connector Type(s) | 1 - PCI Express x4 Male |
|---|---|
| External Ports | 4 - RJ-45 Female |
Software
| OS Compatibility | Windows¨ XP, 7, 8, 8.1, 10 Windows Server¨ 2003, 2012, 2016, 2019 Linux Kernel 2.4.x to 4.11.x LTS Versions only |
|---|
Special Notes / Requirements
| System and Cable Requirements | Available PCI Express x4 or higher (x8, x16) slot |
|---|
Indicators
| LED Indicators | 4 - Link |
|---|---|
| LED Indicators | 4 - Activity |
Environmental
| Humidity | 5% ~ 95% RH |
|---|---|
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
| Storage Temperature | -40°C to 75°C (-40°F to 167°F) |
Physical Characteristics
| Color | Yellow |
|---|---|
| Product Height | 0.7 in [1.8 cm] |
| Product Length | 5.4 in [13.8 cm] |
| Product Width | 4.7 in [12 cm] |
| Weight of Product | 3.4 oz [95 g] |
Packaging Information
| Package Height | 1.6 in [40 mm] |
|---|---|
| Package Length | 5.7 in [14.5 cm] |
| Package Width | 8.2 in [20.9 cm] |
| Shipping (Package) Weight | 6.5 oz [184 g] |
What's in the Box
| Included in Package | 1 - PCIe Gigabit network card - 4 port |
|---|
| SKU | ST1000SPEX43 |
| Barcode # | 65030862448 |
| Brand | Startech |
| Shipping Weight | 0.1800kg |
| Shipping Width | 0.100m |
| Shipping Height | 0.050m |
| Shipping Length | 0.210m |
| Shipping Cubic | 0.001050000m3 |
StarTech.com warranty in Australia
This item is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com 2-year manufacturer warranty in Australia.
Please retain your DeviceDeal tax invoice as proof of purchase.
Warranty coverage and claims are subject to StarTech.com warranty terms, eligibility requirements and product assessment. This wording does not promise automatic replacement or guaranteed claim approval.
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