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- Re: HP Elitebook 840 G2 PCIe or SATA?
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11-20-2019 12:05 AM - edited 11-20-2019 12:13 AM
hello all, i have just recently received the above mentioned laptop for free, and actually out of the garbage (swear to the heavens). I took it apart and found a few interesting things: one was that it has some kind of M.2 slot for a WWAN card (like cellular?) and an M.2 slot for an SSD of some sort. I looked at the product page for this, and there is actually no mention ( that i could find at least) of any of these things being on here, let alone the specs of the slots.
so my question really boils down to this. What is the official SIZE of SSD that i can fit inside of the slot marked SSD (not the regular slot, but the M.2 slot), and is it just standard SATA SSD's that are compatible with it, or is it PCIe? I really dont know the difference between these two techs yet, but i do know (at least i think i do) that one isnt compatible with the other? idk, maybe im wrong.
But at any rate, what would be the best option for me in this situation? what kind of SSD is compatible with the M.2 slot? and what kind of WWAN card is compatible with the WWAN M.2 sot?
EDIT!: ok, upon further inspection of the product support page, i see that there under "storage and drives" it shows "primary storage" and then under that it shows the different types of drives that seem to be supported, but it doesnt designate WHERE it is talking about. i want to assume that it means that the M.2 slot that is designated "SSD" (by silk screening or something in white) is compatible with both standard "SATA" AND "M.2" SSD's. am i correct in this assumption?
also, i see something on the page that speaks about a sort of "Flash Cache module" (32 M.2). what is this, and is it saying that the M.2 slot that I am talking about is where i could plug this "flash cache" into?
thank you in advanced!
dps
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11-20-2019 12:19 AM
Hi,
It supports M2 SSD (2260 form factor)
I would go with SATA, as the PCIe sometimes has compatibility issues with older models.
On page 62 of service manual you can see various drives and part numbers.
http://h10032.www1.hp.com/ctg/Manual/c04560057
You can also see the various compatible WWAN and WLAN cards for the model.
Hope it helps,
David
11-20-2019 12:19 AM
Hi,
It supports M2 SSD (2260 form factor)
I would go with SATA, as the PCIe sometimes has compatibility issues with older models.
On page 62 of service manual you can see various drives and part numbers.
http://h10032.www1.hp.com/ctg/Manual/c04560057
You can also see the various compatible WWAN and WLAN cards for the model.
Hope it helps,
David
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