M.2 Ssd In Wwan Slot

31-05-2019, 04:29 AM #

The SSD used: Toshiba OCZ RC 100 240GB, startup disk manager: diskmgmt.msc. When buying an SSD, be sure to purchase an M.2 drive that is exactly 42mm long, the only length that will fit in the ThinkPad T440s's narrow slot. Though M.2 is the next-generation of mSATA, it is.

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M.2 2242 NVMe SSD for ThinkPad T480
M.2 ssd in wwan slot adapter

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After witnessing the design fiasco that is the ThinkPad 490, I decided to follow others' advice which is to order last year's T480 instead for cheaper.
This model has room for two possible drives.
(1) 2.5' bay caddy attached with NVMe extension cable circuit board to connect a 2280 SSD. I selected this option for the inclusion of that component which would otherwise have to be ordered separately if buying a traditional hard disk first. I will backup the drive image and restore to a larger SSD model.
(2) WWAN slot for a 2242 NVMe SSD. Lenovo only offered 128GB model for that slot, so I left it blank with intention to source for another SSD later.
And regarding the above point, I'm having a tough time locating any shop that even sells a 2242 NVMe SSD. All the rage is 2280, it seems. Can't find any good offerings on Amazon or Newegg either; practically are available 2242 models are SATA-based, rather than the NVMe the slot demands.
An ideal candidate I've seen is Western Digital PC SN520 but that apparently has sold out or only available through obscure channels. The only dedicated NVMe models widely available are China brands like KingSpec and Netac. They don't have enough mainstream popularity for people to actually buy and review them; so it's a long throw to guess their performance and durability.
Anybody else operating 'niche' hardware that call for the smaller 2242, 2230 form factors?

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