If, for example, a card only supports 2.0 and is put in a 3.0 slot, the firmware can report the slot as maxing out at 2.0.

So if your motherboard lies, Windows will dutifully report the lie. One thing to note about the Max link info: these are firmware-dependent. This script will try to make a nice user-readable table for you: It’s way, way more digging than ‘lspci’ would be. Speed is shown in PCIe revision numbers also, beware that the Value section is displayed in hex (so an x16 item will be ‘00000010’).ĬLI: Powershell lets you get at WMI, so we can interrogate the same information DM gets via Win32_PNPEntity class objects. In the drop down, you’re looking for “PCI current link speed/width” (there’s also the max versions a bit further down). GUI: In Device Manager, open up the item in question and go to the Details tab. You CAN get every PCIe devices’ link information in Windows, it’s just a bit buried. Many Windows 10 and Windows Server users do not know the Get-NetAdapterHardwareInfo trick to help get the PCIe speed that a network adapter is currently running at. Linux has fairly easy tools to get at this data. If you have a 100GbE adapter in a PCIe Gen2 x8 slot, you are clearly not going to have enough bandwidth available. The PCIe Gen3 8.0GT/s may seem strange, but that is due to a change in encoding for the PCIe protocol with PCIe 3.0 which means one gets around twice the performance using 8GT/s speeds. Here is a handy table that will let you know how the bandwidth that corresponds to PCIe Gen1, Gen2, and Gen3 adapters: Copy and paste that in PowerShell and you should see all network connections enumerated. Step 2: Get Network Adapter Link Speeds – PowerShell has a “Get-NetAdapterHardwareInfo” feature. Start Windows 10 PowerShell As Administrator We have had a few cases where this did not work for us unless we selected Run as Administrator via the right menu or right-clicking and selecting via the context menu. Perhaps the easiest is to bring up the Windows menu and start typing “PowerShell”.

Step 1: Start PowerShell – There are many ways to get to PowerShell. How to Get Network Adapter PCIe Link Speed in Windows

Here is the simple way to see PCIe link speed in 30 seconds. Also, some systems will lower link rates to lower power consumption. Some platforms, such as the Intel Xeon D-1500 / D-1600, and AMD EPYC systems mix different PCIe generations on the same motherboard. Do you have a network adapter where you need to find the PCIe link speed in Windows? Common reasons include troubleshooting and verification of installation.

Lspci on windows