read write is terrible, and the one in my unit causes a bluescreen when running certain applications. gj acer.
any manufacturer that doesn't specify its component parts can be a lottery - the first acer i got (faulty), consistent read's of 500mb+. The replacement to it, reads less than 400mb. Different m.2 sata manufacturers. It wasn't an issue as i was going to upgrade it anyway.
i think you misread what i said, my Acer came with one then the other, not an issue as it wasn't listed from the manufacturer. My thinkpad was listed, so i would have been grumpy had the samsung PCIe not come with it. Some makes/models do, most consumer targeted stuff doesn't, its not all laptops like you say...
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