ROG X870E-E PCIE 5.0 Slot 3 M.2 Disable Mainboard defect
Solution:
1. Replace with a non-defective motherboard
2. Leave PCIE 5.0 slots 2 and 3 empty and use only slot 1
3. EXPO, Overclocking is prohibited
Just because you use only slot 1, it doesn't mean that the motherboard's defect will go away. I think other problems will occur at some point.
To solve this, you need to replace the motherboard with one that can use slots 2 and 3 without any problems when using memory overclocking and EXPO.
If a problem occurs while using slot 3 and the device is rebooted and M.2 is used again, freezing occurs while using the PC or memory, SSD recognition problems occur. The solution is to replace the motherboard or, if not, prohibit use of slots 2 and 3 and prohibit overclocking.
It's a motherboard defect.
After installing an SSD in the M.2 3rd slot
When EXPO is activated, slots 2 and 3 are deactivated.
Only slot 1 is alive.
When EXPO is activated, slots 2 and 3 are dead.
It's a motherboard defect.
Please replace the motherboard
The symptom will disappear.
I discovered it on October 30, 2024 and told ASUS about the motherboard defect on October 31, 2024, but they ignored it and said that it was a SSD and CPU defect. However, it was a motherboard defect.
Symptoms:
After purchasing on October 29, 2024, M.2 SSD was installed in PCIE5.0 slot 3 and OS was installed.
When EXPO is activated, booting is not possible, no bootable OS.
When checked, M.2 slot 3 was dead.
After entering BIOS and rebooting, M.2 slot 3 was activated again.
Boot was successful, but memory and SSD malfunctions occurred.
The malfunction was confirmed to be caused by M.2 disconnection from the motherboard.
When EXPO was deactivated, M.2 slot 3 was continuously activated.
Summary: When memory overclocking such as EXPO was performed after installing SSD in M.2 slot 3, M.2 slot 3 died (deactivated).
When rebooting, activation and deactivation were repeated.
ASUS and AS distributors responded that it was a defective CPU, SSD, and RAM.
But when the motherboard was actually replaced, the symptom disappeared.
The symptom disappeared, but I am afraid that the symptom will occur again. The rest
I am using it by installing it in the M.2 1st slot.
I confirmed that the M.2 1st slot never dies.
ASUS needs to be aware of this issue and quickly admit to the defect. Don't ignore the issue
Don't just say it's a faulty SSD, a faulty CPU, a faulty RAM
Be honest and say it's your motherboard's fault
ASUS KOREA replied to me like this.
It could be an SSD problem, a CPU problem, or a RAM problem.
We can't believe what you say and we have no way to test it.
If there's something wrong with the motherboard, take it to a place that provides A/S to resolve it. ASUS KOREA doesn't know. Don't ask us for answers anymore.
What's the point of making a lot of PCIE 5.0 M.2 slots? They're just decorations that can't be used.
