
The RTL8125B 2.5G quad-port network adapter combines a quad-speed IEEE802.3-compliant media access controller with a quad-speed Ethernet transceiver that is compliant with the 10/100Mbps Ethernet IEEE802.3u specification, the IEEE802.3ab 1000Mbps Ethernet specification and the IEEE802.3bz 2500Mbps Ethernet specification. It is also available via CAT5e UTP cable or CAT3 UTP (10Mbps only) cable to provide high speed transmission. It is suitable for multiple market segments and emerging applications, such as desktops, workstations, servers, communication platforms and embedded applications.
Specification:
- Auto-negotiation with extended next page functionality
- Support for switching/sex/skew correction Cross-detection and auto-correction
- Support for hardware ECC (Error Correction Code), hardware CRC (Cyclic Redundancy Check) function
- Support for PCI MSI (Message Signal Interrupt) and MSI-XSupport for ECMA-393 ProxZzzy standard for sleeping hosts
- Wake-on-LAN and "RealWow!" technology (remote wake-up) support
- Compatible with IEEE802.3, IEEE802.3u, IEEE802.3ab
- Supports IEEE1588v1, IEEE1588v2, IEEE80.2AS time synchronization
- Supports IEEE802.1Qav credit based shaping algorithm Support IEEE802.1P Layer 2 priority coding
Main Chipset: ASM1812+Realtek RTL8125B
- Support IEEE802.1Q VLAN tagging
- Support IEEE802.3az-2010 Support for IEEE802.3bz-2016 (NGBASET)
- Support for full duplex flow control (IEEE802.3x)
- Support jumbo frames up to 16K bytes
- Support for Virtual Machine Queuing (VMQ)
- Support quad-core receive-side scaling (RSS)
- Bus Type: PCIe x1 2.5Gbps/5.0Gbps, revision v2.1
- Transmission Media: 4 x 2.5G RJ45 ports
- Transfer Rate: 2.5G/1000/100Mbps
- Network Mode: 2.5G and 1G Lite mode supported
System Requirements:
- Linux , Win 7/Win 8/Server 2008/Win 8.1/Server 2012/ Win 10 32/64bit
Packing list
- 1xPCIE 2.5G LAN Card
- 1x Low profile Bracket
- 1xManual
![]() Quad-Port 2.5GBase-T PCIe Network Adapter | ![]() 2.5GBase-T PCIe Network Adapter | ![]() Dual-Port PCIe Gigabit Network Card | ![]() Dual-Port PCIe Gigabit Network Card | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — no data |
| Bus Type | PCI Express 2.1 (5 GT/s) | PCI Express 2.1 (5 GT/s) | PCI Express 2.0 (2.5 GT/s) | PCI Express 1.0 (2 GT/s) |
| Bus Width | X4 lane PCI Express, operable in X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots |
| Card Type | Standard/Low Profile | Standard/Low Profile | Standard/Low Profile | Standard/Low Profile |
| Chipset | ASM1812+RTL8125B | RTL8125B | Intel – 82575/6EB | Intel – 82571EBIntel – 82571EB |
| Wake-On-LAN | ? | ? | ? | no data |
| Support PXE | ? | ? | ? | ? |
| Max. Speed | 2.5Gbps | 2.5Gbps | 1000Mps | 1000Mps |

The RTL8125B 2.5G quad-port network adapter combines a quad-speed IEEE802.3-compliant media access controller with a quad-speed Ethernet transceiver that is compliant with the 10/100Mbps Ethernet IEEE802.3u specification, the IEEE802.3ab 1000Mbps Ethernet specification and the IEEE802.3bz 2500Mbps Ethernet specification. It is also available via CAT5e UTP cable or CAT3 UTP (10Mbps only) cable to provide high speed transmission. It is suitable for multiple market segments and emerging applications, such as desktops, workstations, servers, communication platforms and embedded applications.
Specification:
- Auto-negotiation with extended next page functionality
- Support for switching/sex/skew correction Cross-detection and auto-correction
- Support for hardware ECC (Error Correction Code), hardware CRC (Cyclic Redundancy Check) function
- Support for PCI MSI (Message Signal Interrupt) and MSI-XSupport for ECMA-393 ProxZzzy standard for sleeping hosts
- Wake-on-LAN and "RealWow!" technology (remote wake-up) support
- Compatible with IEEE802.3, IEEE802.3u, IEEE802.3ab
- Supports IEEE1588v1, IEEE1588v2, IEEE80.2AS time synchronization
- Supports IEEE802.1Qav credit based shaping algorithm Support IEEE802.1P Layer 2 priority coding
Main Chipset: ASM1812+Realtek RTL8125B
- Support IEEE802.1Q VLAN tagging
- Support IEEE802.3az-2010 Support for IEEE802.3bz-2016 (NGBASET)
- Support for full duplex flow control (IEEE802.3x)
- Support jumbo frames up to 16K bytes
- Support for Virtual Machine Queuing (VMQ)
- Support quad-core receive-side scaling (RSS)
- Bus Type: PCIe x1 2.5Gbps/5.0Gbps, revision v2.1
- Transmission Media: 4 x 2.5G RJ45 ports
- Transfer Rate: 2.5G/1000/100Mbps
- Network Mode: 2.5G and 1G Lite mode supported
System Requirements:
- Linux , Win 7/Win 8/Server 2008/Win 8.1/Server 2012/ Win 10 32/64bit
Packing list
- 1xPCIE 2.5G LAN Card
- 1x Low profile Bracket
- 1xManual
![]() Quad-Port 2.5GBase-T PCIe Network Adapter | ![]() 2.5GBase-T PCIe Network Adapter | ![]() Dual-Port PCIe Gigabit Network Card | ![]() Dual-Port PCIe Gigabit Network Card | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — no data |
| Bus Type | PCI Express 2.1 (5 GT/s) | PCI Express 2.1 (5 GT/s) | PCI Express 2.0 (2.5 GT/s) | PCI Express 1.0 (2 GT/s) |
| Bus Width | X4 lane PCI Express, operable in X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots | X1 lane PCI Express, operable in X2, X4, X8 and X16 slots |
| Card Type | Standard/Low Profile | Standard/Low Profile | Standard/Low Profile | Standard/Low Profile |
| Chipset | ASM1812+RTL8125B | RTL8125B | Intel – 82575/6EB | Intel – 82571EBIntel – 82571EB |
| Wake-On-LAN | ? | ? | ? | no data |
| Support PXE | ? | ? | ? | ? |
| Max. Speed | 2.5Gbps | 2.5Gbps | 1000Mps | 1000Mps |




















