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Level 1

4 points

Does my old iMac have a pcIe slot?

I have a iMac (Retina 4K, 21.5-inch, Late 2015) and it has 256GB SSD storage

I want to know if I can upgrade nvme ssd.

iMac 21.5″, macOS 11.2

Posted on Aug 9, 2021 12:38 AM

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Level 4

1,684 points

Posted on Aug 9, 2021 3:55 AM

2015 iMac (27" and 21.5") have Apple's propriety NVME PCI-e slot.

Unfortunately, the slot (only 1) is located on logic board and required complete dissemble, in order to access that.

I highly discourage anyone to DIY, unless you really know how to or willing to take the risk.

In the mean time, external USB 3 SSD can serve most of speed need.

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