1. Product Introduction:
A MiniPCIE to 2.5G network card, wired network port desktop network expansion card, built-in independent adaptive Ethernet card.
2. Application scenario:
home computer
soft router
industrial computer
NAS
3. Product description:
A MiniPCIE 2.5G network card based on RTL8125BG chip, external 1V (DC-DC power supply) chip is easy to buy, the peripheral circuit is simple and easy to understand, no firmware is required, just install the driver and you can use it.
4. Product parameters:
PCB length and width: 30mm *51mm (excluding the baffle PCB size, only the MiniPCIE full height size)
MiniPCIE board uniform thickness 1.0mm
MiniPCIE 2.5G network card is backward compatible (supports 2500M/1000M/100M/10M speed), full-duplex half-duplex adaptive
PCB front: (3D rendering)
5. Instructions for use:
When using the MiniPCIE 2.5G network card for the first time, please download and install the corresponding driver in the attachment! ! ! (If you don't install the corresponding driver, it may not work!!!)
Check whether the driver is installed successfully. Open the computer management → network adapter (as shown below) → right-click properties → check whether the device is running normally (as shown below).


Please check whether the computer network rate is 2.5Gbps (as shown below).

Repeatedly transfer large files in the local area network to see if there is any drop in speed, disconnection, etc.
VI. Remarks:
Pure hardware circuit design (need to install the corresponding driver according to the corresponding computer system) (see attachment)
If code 28 (as shown below) and code 10 (as shown below) appear after installing the driver or after the first power-on, please uninstall the driver and reinstall it! ! !
The BOM table is only for reference, please pay attention to the SMT identification! ! !
The cost of this product is estimated to be less than 30 yuan. You can refer to the attachment "Purchase Material Link Reference.csv"
for the baffle PCB (as shown below). Open it directly with a programmer.

If you need information or driver information, go to JLC's Hard Creation Society https://x.jlc.com/platform/detail/8a5627345dee4e6dbc38dce73e43c80c.
Affirm my research and development! Thank you! ! !
7. Test video/picture:
When measuring speed, the real picture inside the chassis:

In the video, the intranet (local area network) is used to transfer large files to each other, and the speed meets the standard! ! !