Why is my external M.2 SSD slowing down to 40 Mbps write speed all of a sudden? Did I buy a faulty SSD? Or are there any other reasons that lead to this? Thanks in advance!
External M.2 SSDs can experience slow write speeds due to a few potential reasons:
Qiling Disk Master Free is a popular software used to check and manage SSD write/read speeds. The "4K Alignment" feature, in particular, can improve the performance of your solid-state drive by optimizing its storage configuration.
You can follow the steps here to check the SSD speed first:
Step 1. Launch Qiling Disk Master and go to the Discovery tab.
Step 2. Select the "DiskMark" feature and then choose the target drive, test data, and block size.
Step 3. Click "Start" to run the disk test, and you will see the Sequential or Random read/write speed, I/O, and Delay data.
After checking the SSD speed, follow the steps here to perform 4K Alignment and improve SSD read and write speed:
Step 1. Go back to Qiling Disk Master and go to the Toolkit tab.
Step 2. Select the "4K Alignment" feature and then choose your SSD.
Step 3. Click "Start" and wait patiently.
Related Article: How to Fix SSD Slow Write Speed on Windows 10/11 [Full Guide]