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2.5G PCIe Ethernet Network Card with Realtek RTL8125 Gaming NIC Card, 2500Mbps/2.5Gbps RJ45 LAN Adapter, Low-Profile Bracket Included, Compatible with Windows 7/8/10/11, Linux for Desktop PC
- 2.5X Faster Than Standard Gigabit - Upgrade to blazing 2.5Gbps wired speeds for lag-free competitive gaming, instant 4K/8K streaming, and rapid file transfers. The essential upgrade for gaming PCs, NAS setups, and high-bandwidth home networks; Universal Compatibility & Easy Setup - Fit for any PCIe slot (x1, x4, x8, x16). Includes both full and low-profile brackets to fit any desktop, SFF PC, or home server. Works with Windows 11/10/8/7 and Linux; No New Router Required - Instantly upgrade your PC without changing your existing network equipment. Backwards compatible with 2.5G, 1G, 100M, and 10Mbps routers and switches; Engineered for Reliability & Cool Performance - Powered by the trusted Realtek RTL8125 chip and a built-in heatsink. Ensures stable, high-speed data transfer and sustained performance, even during heavy, prolonged use; Future-Proof Your Connection - Achieve a secure, low-latency link perfect for gaming, video calls, and large backups. A smart investment that maximizes your network for years to come
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Product description Ultimate 2.5G PCIe Gaming Network Card 2.5X Faster Than Gigabit Upgrade Your PC in Minutes This Realtek RTL8125 powered PCIe card delivers true 2.5G bps speeds for gaming, streaming, and NAS. No new router needed. Fits any desktop or SFF PC. 2.5G High Speed | RTL8125 Chip Stable Performance | Broad Network Compatibility 2.5X faster than standard gigabit Ethernet, delivers up to 2500Mbps ultra-fast speed for lag-free gaming, smooth 4K/8K streaming and rapid large file transfers. Adopts Realtek RTL8125 main control chip with built-in high-efficiency heatsink, ensuring stable cooling and sustained high-speed transmission even under long-time heavy network load.
Backward compatible with 2.5G /1G/100M/10Mbps routers and switches, no need to replace your existing network devices, easy to upgrade your PC network in minutes. Full PCIe & System Compatibility Fits PCIe X1 X4 X8 X16 all slots Comes with full-height & low-profile bracket Perfect for Desktop PC, SFF PC, Home Server, NAS Supports Windows 11/10/8/7 & Linux system Premium Quality & Easy Installation Well-made circuit board with strict quality control, low power consumption and durable performance. Simple plug and play installation with complete accessories, a cost-effective 2.5G Ethernet upgrade solution for your PC.
Multi-Scenario Application Ideal for gaming desktop, NAS storage server HD video conference & large data backup Home high-bandwidth network & office expansion Future-proof your wired network connection RTL8125 2.5G PCIe NIC Frequently Asked Questions Q1: What is the real-world speed of this RTL8125 PCIe network card?
A: This card delivers up to 2500Mbps ( 2.5G bps) thats 2.5 x faster than standard Gigabit. In real-world file transfers, youll get 280290 MB/s (compared to ~110 MB/s on Gigabit), depending on your NAS, SSD, and network setup. Great for lag-free gaming, instant 4K/8K streaming, and fast NAS backups. Backward compatible with 1G, 100M, and 10M networks.
Q2: Will this 2.5G NIC fit a small SFF PC or a standard desktop?
A: Yes. It includes both full-height and low-profile brackets, plus screws. Fits any PCIe slot (x1/x4/x8/x16). Works perfectly in standard desktops, SFF small form factor PCs, home servers, and NAS devices.
Q3: What operating systems are compatible with this RTL8125 network card?
A: Fully supports Windows 11/10/8/7 and Linux. To get full 2.5G speed, download the latest official driver for free from Realteks website.
Q4: Do I need to replace my existing router to use this 2.5G card?
A: No. It auto-negotiates backward with 1G, 100M, and 10M routers/switches. You can upgrade your PCs network today without changing any other equipment. Later, if you get a 2.5G router or switch, the same card will automatically run at full 2.5G bps future-proof.
Q5: Will this card overheat during long gaming sessions or 24/7 NAS use?
A: No. The card uses the energy-efficient RTL8125 chip and comes with a built-in heatsink. Even after hours of competitive gaming, large file transfers, or continuous NAS operation, it stays cool youre unlikely to experience thermal throttling or disconnections. Designed for reliable 24/7 performance. 2.5G bps PCIe Network Card 10Gbps PCIe Network Card 2.5G bps PCIe Network Card 5Gbps PCIe Network Card Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 5.0 out of 5 stars 7 5.0 out of 5 stars 2 4.0 out of 5 stars 39 4.3 out of 5 stars 5 Price $ 16.99 $16. 99 $ 55.99 $55. 99 $ 66.49 $66. 49 $ 20.89 $20. 89 Interface PCI-E X1 X4 X8 X16 PCI-E X4 X8 X16 PCI-E X4 X8 X16 PCI-E X1 X4 X8 X16 Chipset RTL8125 AQC113 I226 RTL8126 Port 1 x RJ45 Port 1 x RJ45 Port 4 x RJ45 Port 1 x RJ45 Port Supported Speeds 100Mbps / 1Gbps / 2.5G bps 100Mbps / 1Gbps / 2.5G bps / 5Gbps / 10Gbps 100Mbps / 1Gbps / 2.5G bps 100Mbps / 1Gbps / 2.5G bps / 2.5G bps / 5Gbps Operating Systems Windows 11/10/8/7; Linux; Windows Server 2016 Windows 10/11; Linux Windows 10/11; Windows Server 2019/2022/2025; Linux Windows 10/11; Linux
Backward compatible with 2.5G /1G/100M/10Mbps routers and switches, no need to replace your existing network devices, easy to upgrade your PC network in minutes. Full PCIe & System Compatibility Fits PCIe X1 X4 X8 X16 all slots Comes with full-height & low-profile bracket Perfect for Desktop PC, SFF PC, Home Server, NAS Supports Windows 11/10/8/7 & Linux system Premium Quality & Easy Installation Well-made circuit board with strict quality control, low power consumption and durable performance. Simple plug and play installation with complete accessories, a cost-effective 2.5G Ethernet upgrade solution for your PC.
Multi-Scenario Application Ideal for gaming desktop, NAS storage server HD video conference & large data backup Home high-bandwidth network & office expansion Future-proof your wired network connection RTL8125 2.5G PCIe NIC Frequently Asked Questions Q1: What is the real-world speed of this RTL8125 PCIe network card?
A: This card delivers up to 2500Mbps ( 2.5G bps) thats 2.5 x faster than standard Gigabit. In real-world file transfers, youll get 280290 MB/s (compared to ~110 MB/s on Gigabit), depending on your NAS, SSD, and network setup. Great for lag-free gaming, instant 4K/8K streaming, and fast NAS backups. Backward compatible with 1G, 100M, and 10M networks.
Q2: Will this 2.5G NIC fit a small SFF PC or a standard desktop?
A: Yes. It includes both full-height and low-profile brackets, plus screws. Fits any PCIe slot (x1/x4/x8/x16). Works perfectly in standard desktops, SFF small form factor PCs, home servers, and NAS devices.
Q3: What operating systems are compatible with this RTL8125 network card?
A: Fully supports Windows 11/10/8/7 and Linux. To get full 2.5G speed, download the latest official driver for free from Realteks website.
Q4: Do I need to replace my existing router to use this 2.5G card?
A: No. It auto-negotiates backward with 1G, 100M, and 10M routers/switches. You can upgrade your PCs network today without changing any other equipment. Later, if you get a 2.5G router or switch, the same card will automatically run at full 2.5G bps future-proof.
Q5: Will this card overheat during long gaming sessions or 24/7 NAS use?
A: No. The card uses the energy-efficient RTL8125 chip and comes with a built-in heatsink. Even after hours of competitive gaming, large file transfers, or continuous NAS operation, it stays cool youre unlikely to experience thermal throttling or disconnections. Designed for reliable 24/7 performance. 2.5G bps PCIe Network Card 10Gbps PCIe Network Card 2.5G bps PCIe Network Card 5Gbps PCIe Network Card Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 5.0 out of 5 stars 7 5.0 out of 5 stars 2 4.0 out of 5 stars 39 4.3 out of 5 stars 5 Price $ 16.99 $16. 99 $ 55.99 $55. 99 $ 66.49 $66. 49 $ 20.89 $20. 89 Interface PCI-E X1 X4 X8 X16 PCI-E X4 X8 X16 PCI-E X4 X8 X16 PCI-E X1 X4 X8 X16 Chipset RTL8125 AQC113 I226 RTL8126 Port 1 x RJ45 Port 1 x RJ45 Port 4 x RJ45 Port 1 x RJ45 Port Supported Speeds 100Mbps / 1Gbps / 2.5G bps 100Mbps / 1Gbps / 2.5G bps / 5Gbps / 10Gbps 100Mbps / 1Gbps / 2.5G bps 100Mbps / 1Gbps / 2.5G bps / 2.5G bps / 5Gbps Operating Systems Windows 11/10/8/7; Linux; Windows Server 2016 Windows 10/11; Linux Windows 10/11; Windows Server 2019/2022/2025; Linux Windows 10/11; Linux
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