Professional 4-Port 2.5Gbps Ethernet Expansion Card
This card is a 2.5Gbps Ethernet PCI Express Card, which is specifically designed to plug into a desktop equipped with an available x4, x8 or x16 PCI Express slot. It supports high performance dual channel networking and full duplex communication to achieve maximum throughput.
✓ Perfect for: Desktop computers, servers, NAS systems and other network equipment requiring high-speed multi-port connectivity.
🚀 Key Features
- ▸Quad 2.5G Ports: Four independent RJ45 ports supporting 10/100/1000M/2.5Gbps speeds
- ▸RTL8125B Chipset: Industry-proven Realtek controller for stable, high-performance networking
- ▸Full Duplex Communication: Simultaneous send/receive on all ports for maximum throughput
- ▸Flexible Installation: Compatible with PCIe x4, x8, or x16 slots
- ▸Windows & Linux Compatible: Supports Windows and Linux operating systems
- ▸Low Profile Ready: Includes low-profile bracket for compact chassis
📋 Technical Specifications
📦 Package Included
- 1 × PCI-Express 2.5G Card
- 1 × Low Profile Bracket
❓ Frequently Asked Questions
Q: Will this card work in a PCIe x1 slot?
A: No, this card requires a PCIe x4, x8, or x16 slot. It will not fit in a PCIe x1 slot due to the physical connector size.
Q: Can all four ports run at 2.5Gbps simultaneously?
A: Yes, all four RJ45 ports can operate at full 2.5Gbps speed simultaneously, providing up to 10Gbps total aggregate bandwidth through the PCIe x4 interface.
Q: Do I need to install drivers for Windows/Linux?
A: Windows 10/11 and most modern Linux distributions include native RTL8125B drivers. For optimal performance or older systems, download the latest drivers from the link provided above.
Q: Is this card compatible with 10G or 1G networks?
A: The card is backward compatible with 10/100/1000Mbps (1G) networks and will auto-negotiate to the appropriate speed. However, it does not support 10Gbps - maximum speed is 2.5Gbps per port.
Q: Can I use this for link aggregation/teaming?
A: Yes, the RTL8125B chipset supports link aggregation (LACP/802.3ad) and NIC teaming when configured with compatible switches and operating system support.
Q: Does this card support Wake-on-LAN (WoL)?
A: Yes, the RTL8125B chipset supports Wake-on-LAN functionality when properly configured in your system BIOS and operating system.
Q: What's the difference between this and a 10G network card?
A: This 2.5G card offers a cost-effective upgrade from 1G without requiring expensive 10G infrastructure. It works with standard Cat5e/Cat6 cables and is ideal for NAS, multi-network servers, and workstations that don't need full 10G speeds.