Is anything gained by swapping a 2.5" SSD for an M.2 NVME drive?

[CharlieDog]

Just curious since I see the W540 has an opening for an M.2 42mm NVME drive. I'm not sure if that is a PCIe 4x or SATA connection. If that is also SATA III speed as the 2.5" SSD is, would there be any difference in start up or overall operation-this would be in email, surfing, light photo editing, no gaming or spread sheets.

[RealBlackStuff]

That 'slot' runs at SATA-III speed and is for an M.2 NGFF 2242 SSD.
NVME does NOT work in there.

It will run at the same speed as the main SSD.

[CharlieDog]

Thanks for the prompt reply. I think I'll use the slot for additional internal storage-I do not want to give up my DVD drive.