Description
• High-Speed Networking :Experience seamless and efficient networking with this adapter’s 1000M Ethernet transmission rate, ensuring fast and reliable data transfer.
• Compatibility :This adapter is compatible with PCs running Win10 or Win11, making it a versatile choice for various computing devices.
• Quality Assurance :Manufactured by DERAPID, a trusted name in networking equipment, this adapter guarantees high-quality performance and longevity.
• Versatile Interface :Equipped with a PCI-E socket, this adapter offers a wide range of applications, making it a flexible addition to your networking setup.
• Desktop Application :Ideal for desktop use, this adapter provides a reliable and stable connection for your computing needs.
• External Design :As an external device, this adapter allows for easy installation and configuration, providing a hassle-free networking solution.
ProductDescription
Integrated10/100/1000M/2.5Gtransceiver.
Supports2.5Gand1GLitemode.
Auto-NegotiationwithExtendedNextPagecapability(XNP).
SupportsPCIExpress2.1.
Supportspairswap/polarity/skewcorrection
ConfigurableMDIportordering(MDIswap)foreasyPCBlayout.
Supports1-Lane2.5/5GbpsPCIExpressBus.
EmbeddedOTPmemorycanreplaceexternalEEPROM
CustomizedLEDs.
ControllableLEDBlinkingFrequencyandDutyCycle.
Self-Loopbackdiagnosticcapability.
Thermalmanagement.
SerialEEPROM.
Supports32MbytesExternalSerialPeripheralInterface(SPI)Flash.
SupportsLTR(LatencyToleranceReporting)
Wake-On-LANand“RealWoW!”Technology(remotewake-up)support.
Chipset |
RTL8125B |
Port number |
1* RJ45 |
Standard |
IEEE 802.3,IEEE 802.3u,IEEE 802.3ab,IEEE 802.3az,IEEE 802.3bz |
Network media |
10Base-T,cat3 or above UTP,1000Base-Tx,cat5 or above UTP |
IEEE Standards |
IEEE 802.11a/b/g/n/ac |
Data rate |
10/100/1G/2.5Gbps |
Interface |
PCI Express 1x slot |
MDIX Car |
YES |
Full Duplex Support |
YES |
MTBF |
376,212 Hours |
LED Indicator |
Link/Act, Speed |
Dimension |
71.5*50*1.6mm |
Support OS |
Windows®10(32/64), Win7 (32/64), Win8,8.1 (32/64) Windows Server® 2012, 2008 LINUX up to 4.15 |
Environment |
Operating Temperature: 0 ℃-60 ℃ |
Warm Tips:
One green light blinking and one green light on indicates 2.5G connection status
One blinking green light and one constant blue light indicates 1G connection status

Q&A
Q1: Is it Compatible with AMD platform?
A1: Compatible, not dependent on platform manufacturer
Q2: The function does not work, what should I do?
A2: Please download and install the driver.And then restart your computer.
Driver link:
https://www.realtek.com/zh-tw/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software
Q3:What slots can be applied to
A3:The RTL-8125B can Compatible with Pcie X1 X4 X8 X16 slot.
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