Description
Upgrade your desktop PC, server or network workstation with the Lekuo PR25R21 dual-port 2.5GbE PCIe network card.
Built around the Realtek RTL8125B chipset, this adapter adds two RJ45 Ethernet ports with support for up to 2.5Gbps
networking.
It is a practical upgrade for users who need faster-than-gigabit wired networking for NAS access, large file
transfers, home lab systems, workstations, small servers or other network equipment.
Key Features
-
- Dual 2.5GbE RJ45 Ethernet ports
- Realtek RTL8125B chipset
- PCIe x4 interface, compatible with PCIe x4, x8 and x16 slots
- Auto-negotiation support
- Crossover detection and auto-correction
- Hardware ECC and CRC support
- MSI and MSI-X interrupt support
- IEEE 802.3az Energy Efficient Ethernet
Compatibility Notes
For best performance, use with a 2.5GbE-capable switch, router or connected device. Drivers may be required
depending on your operating system and configuration.
Specifications
| Model | PR25R21 |
|---|---|
| Chipset | Realtek RTL8125B |
| Input Interface | PCIe x4 |
| Slot Compatibility | PCIe x4, x8, x16 |
| Ports | 2 x RJ45 |
| Transmission Rate | Up to 2.5Gbps |
| Usage | Desktop PCs, servers and network equipment |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -10°C to 80°C |
| System Compatibility | Windows, Linux, macOS and other systems |









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