I Face PCIe 4.0 Speed Limitation on My Dell G15 5511 Despite Official Specs

I’m writing to report a serious and persistent issue with my Dell G15 5511 laptop (Service Tag: D7NTZ**, Express Service Code: 287614638**).

According to the device’s official technical specifications, the primary M.2 slot (SSD-1) supports PCIe 4.0 NVMe SSDs. However, after installing a high-performance PCIe 4.0 SSD and running multiple diagnostic tests, I confirmed that the BIOS is capping the drive speed to PCIe 3.0 levels (around 3500 MB/s). Tools such as CrystalDiskInfo also verify that the active transfer mode is “PCIe 3.0 x4.”

To ensure the issue wasn’t caused by installation or configuration errors, I performed the following steps:

Verified that the SSD is correctly installed in the PCIe 4.0-supported slot listed in Dell’s service manual.

Installed the latest BIOS version from Dell’s official support site.

Checked the BIOS menu and confirmed that no option exists to manually adjust PCIe lane speed.

After researching the issue on Dell Community Forums, Reddit, and other tech platforms, I found that this problem is widespread and specific to the G15 5511 model. It appears Dell may have artificially restricted PCIe 4.0 performance for third-party SSDs at the BIOS level.

Given this, I would like Dell to provide clear answers to the following:

Has Dell officially acknowledged this limitation on the G15 5511 model?

Will Dell release a BIOS update to enable full PCIe 4.0 speeds for all compatible SSDs?

If no update is planned, what is the technical or policy-based justification for this deliberate restriction?

I’m extremely dissatisfied that a feature advertised and paid for is being limited without disclosure. I request an official explanation and a solution or firmware fix to restore full advertised PCIe 4.0 performance.