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Verdict: The 10Gtek I350-GE-4T-X4 is a sensible buy when you need four reliable copper 1GbE links in a firewall, router, NAS, server, or virtualization host and do not need 10GbE. ServeTheHome reached the 1Gbps range on all four ports, and the card’s Intel i350-AM4 controller, PCIe 2.1 x4 interface, low-profile bracket, and compact design make it easy to deploy in small systems. Expect mature, straightforward hardware rather than exceptional features, and plan to identify the physical port mapping after installation.
What the 10Gtek I350-GE-4T-X4 is
The I350-GE-4T-X4 is a four-port RJ-45 Gigabit Ethernet adapter built around Intel’s i350-AM4 controller. 10Gtek lists it as compatible with the Intel I350-T4 and supplies both full-height and low-profile brackets. The card uses four PCIe lanes and is intended for systems that need several independent 1GbE interfaces from one expansion slot.
Intel describes the I350 as a non-bridged PCIe Gen2 quad-port 1GbE controller compliant with IEEE 802.3, 802.3u, and 802.3ab. That architecture is useful for firewalls, routing, virtualization, storage networks, and separate management or LAN segments because each port is exposed as an independent adapter.
See the 10Gtek I350-GE-4T-X4 product listing for the current seller specification and availability.
The Tool Desk
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- Built with original Intel I350 Gigabit Ethernet Controller chip, enables customers to take full advantage of 1GbE. Compare to Intel I350-T4(NOTE: DON'T SUPPORT LINK AGGREGATION IN WIN10.).
- Low Profile & Full Height brackets. PCI Express* 2.1. 5 GT/s x4 Lane. Compatible with x4, x8, x16 standard (except x1 slots) and low-profile PCI Express* slots.
- Quad 100/1000Mbps RJ45 ports which can support cat5 cable up to 100m. Transmission Rate Per Port: 100/1000Mbps.
- Supported Operating Systems: Windows Server 2008/2012/2016/2019, Windows7/8/10/11/Vista/XP, Linux, VMware ESX/ESXi*.
- NOT support hot swaping. Easy installation, a driver disk is included in the package or you can download the driver from Intel website.
Specifications that matter
| Item | Specification |
|---|---|
| Controller | Intel I350-AM4, according to 10Gtek |
| Ports | Four RJ-45 copper ports |
| Link rates | 10/100/1000 Mbps per port |
| Bus | PCIe 2.1, 5.0 GT/s, x4; the controller can also operate in x8 or x16 slots |
| Cabling for Gigabit | CAT5e or better for 1000BASE-T |
| Typical copper power | 5.0 W, from the Intel specification reproduced by Cisco |
| Brackets | Full-height and low-profile brackets are listed |
| Cooling | Small heatsink on a physically compact card |
Intel’s controller details are documented in the Intel I350 product brief. The electrical and cabling figures appear in the Intel specification brief hosted by Cisco.
Performance: what the review actually showed
In ServeTheHome’s hands-on testing, iperf3 achieved speeds in the 1Gbps range on all four ports. That demonstrates that the adapter can deliver expected Gigabit throughput across its port set in the tested system; it is not a promise that every workload or host will reach the same result. CPU load, PCIe topology, cabling, switch capacity, drivers, and the traffic pattern can all affect throughput.
Rank #2
- Ethernet Controller: 1Gb Network Card equipped with original Intel I350 chip, which supports Quality-of-Service (QoS) technology to streamline your online experience and ensure stability; Compare to Intel I350-T4
- Widely Compatible OS: Windows 7/8/10/11, Windows Server 2008/2012/2016/2019, Centos/RHEL 6/7/8, Ubuntu 16/18/19/20, Debian 9/10/11,FreeBSD 10/11/12, Vmware Esxi 5/6, SLSE 11/12. (Not support Mac OS and Bypass Mode)
- Quad RJ45 NIC: RJ45 Ports support 10/100/1000Mbps data rates and Cat5e Cable, up to 100 meters, simplifying the transition to 1 Gb; PCI Express 2.1 (5 G T/s) X4 Lane, compatible with PCIE X4, X8, X16 Slot. Support 1 Gbps/ 100 Mbps data rates
- Easy to Install: Packed with both Low Profile Bracket and Full-height Bracket that support on Standard and Slim computer/server; Download operating systems driver from intel website or scan the QR code on the network card
- Friendly Service: Provides 24/7 Customer Service, 30 Days Free-returned, 3 Years Free Warranty and Lifetime Technology Support
All four interfaces appeared in the operating system after installation. The main usability problem was port identification: when the far-end port was connected, the operating-system enumeration did not correspond neatly to the physical order printed on the card. For a firewall or router, label each cable and verify the mapping before assigning WAN, LAN, or management roles.
ServeTheHome characterized the implementation as a mature, “boring” design and reported that the card arrived and worked as expected. Its purchase price during testing was $55–60 in February 2026. The manufacturer page displayed $68.99 when accessed; both figures are time-sensitive and may change with stock, seller, or region.
Rank #3
- Built with original Intel I350 Gigabit Ethernet Controller chip, enables customers to take full advantage of 1GbE. Compare to Intel I350-T4(NOTE: DON'T SUPPORT LINK AGGREGATION IN WIN10.).
- Low Profile & Full Height brackets. PCI Express* 2.1. 5 GT/s x4 Lane. Compatible with x4, x8, x16 standard (except x1 slots) and low-profile PCI Express* slots.
- Quad 10/100/1000Mbps RJ45 ports which can support cat5 cable up to 100m. Transmission Rate Per Port: 10/100/1000Mbps.
- Supported Operating Systems: Windows Server 2003/2008/2012/2016, Windows7/8/10/Vista/XP, Linux, VMware ESX/ESXi*.
- NOT support hot swaping. Easy installation, a driver disk is included in the package or you can download the driver from Intel website.
Read the complete ServeTheHome review for the original test context.
Compatibility with pfSense, OPNsense, Linux, and Windows
The i350 is a long-established server controller, so its design is a strong fit for operating systems that use standard Intel Ethernet drivers. The supplied material does not include independent benchmark results for each operating system, however, so compatibility should be confirmed against the release and hardware platform you plan to deploy.
Rank #4
- [ Quad Port Gigabit Ethernet Expansion ] Upgrade your desktop, workstation, or server with four independent 1GbE RJ45 ports. Powered by Intel I350-T4 controller, this PCIe network card delivers reliable Gigabit Ethernet connectivity for high-speed data transfer, network expansion, firewall applications, virtualization, and server environments.
- [ Intel I350-T4 Controller for Stable Performance ] Built with Intel I350-T4 controller, this 4-port Gigabit NIC provides efficient data processing, low CPU utilization, and reliable network performance. Designed for professional applications such as servers, NAS, virtualization platforms, firewalls, and network management systems.
- [ 10/100/1000Mbps RJ45 Ethernet Ports ] Each RJ45 port supports auto-negotiation at 10/100/1000Mbps and works with standard Cat5e or higher Ethernet cables. Enjoy stable Gigabit connections with transmission distances up to 100 meters, making it suitable for home, office, business, and enterprise network expansion.
- [ PCIe Compatibility & Wide OS Support ] Compatible with PCIe x4/x8/x16 slots. Supports Windows 7/8/10/11, Windows Server 2008/2012/2016/2019/2022, Linux distributions including Ubuntu, Debian, and CentOS/RHEL, FreeBSD, and VMware ESXi.
- [ Low Profile Design & Flexible Installation ] Includes both standard and low-profile brackets to fit various computer cases, including desktops, workstations, servers, and compact systems. The integrated heat sink improves heat dissipation and helps maintain stable performance during continuous network operation.
pfSense and OPNsense
For a firewall, the four ports can provide separate WAN, LAN, DMZ, and management links from one slot. Install the card, boot the firewall, record the interface names, then connect one cable at a time to match software interfaces to the physical jacks. Do not assume the operating system’s numbering follows left-to-right port order.
Linux
Linux can expose each physical port as a separate network interface. Persistent naming rules, NetworkManager profiles, systemd-networkd files, bridges, bonds, VLANs, and virtual-machine assignments should be built only after you have verified which interface maps to each jack.
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Best Value
- Equipped with original Intel XL710-BM1 controller chip which supports I/O virtualization and make the servers more stable.
- Compatible with Windows Server 2012/ 2008; Linux Stable Kernel version 2.6.32/3x; Linux RHEL 6.5 and RHEL 7.0; Linux SLES 11 SP3 and SLES 12; VMware ESXi 5.1/ 5.5.
- Quad SFP+ ports let you connect to 10 Gigabit SFP+ module/DAC/AOC for meeting the demands of data center environments. PCI Express 3.0 (8 GT/s) x8 Lane is suitable for both PCI-E X8 and PCI-E X16 slots.
- With profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server.NOT support hot swaping.
- What You Get: 10Gtek XL710-10G-4S (compare to Intel X710-DA4) 10GbE PCI-E X8 Network Card x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned, 3 Year Free Warranty and Lifetime Technology Support.
Windows
Windows will normally present multiple Ethernet adapters after the driver is installed. Rename them immediately (for example, LAN1 through LAN4) and document the MAC address and physical-port mapping before configuring teaming, Hyper-V virtual switches, or static addresses.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Will it fit your server?
- Slot: Reserve a PCIe slot with at least four available lanes. The card can operate in physically larger x8 or x16 slots, but check the motherboard’s lane sharing and firmware documentation.
- Chassis: Use the included low-profile bracket for slim or short-depth systems; use the full-height bracket for standard server cases.
- Clearance: Check neighboring-slot, heatsink, drive-cage, and airflow clearance. The card is compact, but four network connectors still need rear-panel space.
- Cabling: Use CAT5e or better for Gigabit links and verify that the switch-side ports are also configured for the intended speed and duplex.
- Power and thermals: The cited specification gives 5.0 W typical copper consumption. No independent long-term thermal, acoustics, or failure-rate data was published in the reviewed material.
Buying decision: when it makes sense
| Requirement | How this card fits | What to verify |
|---|---|---|
| Four copper 1GbE links | Direct fit; four independent RJ-45 ports | Switch ports, cables, and interface mapping |
| Small server or firewall | Low-profile bracket and compact card help | Bracket, slot clearance, and lane allocation |
| 10GbE networking | Not suitable; this is a 1GbE adapter | Choose a 10GbE NIC instead |
| Two-port requirement | Works, but leaves two ports unused | Compare the price and power of a two-port model |
| Lowest acquisition cost | New pricing was $55–60 in the review and $68.99 on 10Gtek’s accessed listing | Compare current new and used prices and seller reputation |
| Intel I350-T4 alternative | 10Gtek identifies an Intel I350-AM4 controller and I350-T4 compatibility | Confirm the exact controller, warranty, bracket, and return policy |
The strongest reason to choose it is port density: four Gigabit connections in one PCIe slot without paying for 10GbE capability you will not use. A two-port adapter may be better for a simple workstation or small firewall, while a 10GbE card is the appropriate upgrade when aggregate traffic or storage links exceed Gigabit limits.
Installation and port-mapping checklist
- Shut down the system, install the correct bracket, and seat the card in a compatible PCIe slot.
- Boot the operating system and confirm that four Ethernet interfaces are detected.
- Update or select the platform’s supported Intel network driver package.
- Connect one known-good cable and switch port at a time; record the interface name, MAC address, and physical jack.
- Set link speed, VLANs, bridges, firewall zones, or virtual switches only after the mapping is documented.
- Run an iperf3 test or an equivalent transfer test on each port and investigate any result well below the expected 1Gbps range.
Limitations to keep in mind
- The published performance evidence is a single hands-on review, not a universal benchmark guarantee.
- No independent multi-OS benchmark set, acoustic measurement, long-term reliability study, or detailed thermal test was provided.
- Physical port order may not match software enumeration, creating avoidable configuration mistakes.
- Pricing and inventory are volatile, and the displayed manufacturer price may differ from the review-period purchase price.
Bottom line
Buy the 10Gtek I350-GE-4T-X4 when you need four copper Gigabit interfaces, a low-profile option, and a well-established Intel i350-AM4 design. Its reviewed 1Gbps-range performance on all four ports and modest 5.0 W typical copper power make it a practical server and firewall adapter. Verify the exact controller, bracket, PCIe slot, cabling, current price, and interface-to-jack mapping before deployment.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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