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P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-03, 9:53 AM

Hi,

I can’t find the part 4XB0K59917 on US Lenovo website, is there a newer replacement for it?

Thanks,

Adi

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-03, 10:05 AM
4XB0K59917' FRU # is 00UR798. Get it here
https://lenovo.encompass.com/item/10691662/Lenovo/00UR798/



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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-03, 14:54 PM

Thanks

From what I read there are 2 versions:

4XB0L78233  for M.2 SATA

4XB0K59917 for M.2 NVME
Are they they different?

 

The part number in the link that you sent me is: 00UR798

Is it the SATA version or the NVMe?


Here it seems as the 4XB0K59917  NVMe:

https://support.lenovo.com/il/en/solutions/acc100271

 

But here as the 4XB0L78233   SATA:

https://support.lenovo.com/il/en/solutions/acc100301

Thanks!

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-03, 15:28 PM
Both marketing p/ns (for both SATA and NVMe versions) matches to the same FRU 00UR798. There isn't a difference.



x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique hand-made config
ThinkPad 25 Special Anniversary Edition. #Retro. Signed by D.Hill
T470p | X1 Carbon Gen3 | Miix 2 10" | Yoga Tablet 2-1050F (Android) + BT Keyboard
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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-03, 20:29 PM

According to other threads there supposed to be a thermal pad for the NVMe version?
In the photo from your link (Part Number00UR798) it seems there isn't a thermal pad?

https://lenovo.encompass.com/item/10691662/Lenovo/00UR798/

 

A Lenovo custumer representitive refered me to another link (Part Number00UR868):

https://lenovo.encompass.com/item/10761380/Lenovo/00UR868

 

My P50 is 20ENCTO and this model doesn't appear in either of these two links, does it matter?
When searching the Lenovo site with my part number the search points to 4XB0L78233, 4XB0K59917 and the second one is unavailable.

Thanks!

 

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-04, 13:34 PM

I have been chasing down this mystery regarding the two M.2 SSD trays available for the P5x laptops for quite a while now, and I think I finally have received the definitive answer from Lenovo.

 

I believe that 4XB0L78233 ("ThinkPad P50 M.2 SATA SSD Tray"} is the newer part, and is the replacement for 4XB0K59917 ("ThinkPad M.2 SSD Tray"}.  The FRU number is the same for both, 00UR798, and hence the earlier part number is no longer available to order as an accessory item.

ThinkPad P50 M.2 SATA SSD Tray - Overview and Service Parts

ThinkPad Hard Disk Drives (HDD), Solid State Drives (SSD) - Overview and Service Parts

Latest Accessories and Options Compatibility Matrix (OCM)

 

ThinkPad, ThinkCentre, ThinkStation, Ideapad and Ideacentre Option Compatibility Matrix (XLSX)

 

 

As to why the thermal pad present on the 59917 tray was dropped in the newer 78233 tray, I can't say.  But my guess would be that it was deemed unnecessary even for NVMe M.2 drives and that two distinct parts were in fact not actually required. No other explanation can be concluded.

 

As to the choice of English words used to describe the older and newer trays, well I can't judge.  Might they have been better selected to perhaps avoid ambiguity and user confusion, probably.

 

But I do know that I have it on good authority that the  newer 78233 tray DOES work just fine and interchangeably for both SATA and NVMe M.2 drives.  There are no electrical connectors on either tray, as it's just a physical device to hold the smaller M.2 card of either type securely in the slightly larger M.2 drive bay of the P5x laptops (which can convert their two M.2 bays into a single bay to be used for a single second 2.5" SATA drive through the use of the proper storage adapter kit) and allow the SATA/NVMe gold teeth from the M.2 card itself to slide through and mate with the matching laptop SATA/NVMe electrical connector at the upper edge of the M.2 bay itself.

 

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-04, 21:21 PM

The answers I got from Lenovo support and the manual they referred me to are different from what you wrote.

 

According to the manual:

“The M.2 solid-state drive slots support both SATA solid-state drives and NVMe solid-state drives. NVMe solid-state drives require a tray with an insulation pad a installed on the bottom. SATA solid-state drives do not require a tray with an insulation pad. Ensure that you use the correct tray for each kind of solid- state drive as shown in the following table.”

https://download.lenovo.com/pccbbs/mobiles_pdf/p50_hmm_en_sp40j71944_03.pdf

 

They said FRU 00UR868 is compatible for M.2 NVMe drives

https://lenovo.encompass.com/item/10761380/Lenovo/00UR868/

 

And FRU 00UR798 is a tray for regular SSD (M.2 SATA)

https://lenovo.encompass.com/item/10691662/Lenovo/00UR798/

 

Both of them doesn't have insulation pad and this should be bought separately for the NVMe.

I don't know and haven't got an answer from them what is the difference between the 00UR798 and 00UR868 if these are just the plastics trays without connectors and both don't have the thermal pad.


I guess the best bet for M.2 NVMe is the part number 4XB0K59917 (not sure it's FRU) on Amazon with the thermal pad (some of the versions there are without the pad)

 

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-04, 23:28 PM

I understand and appreciate your confusion, same as mine.  There is no logical explanation to this seeming conflict of documentation.

 

But the P50 Hardware Maintenance Manual is dated "Fourth Edition October 2017" whereas the "Options Compatibility Matrix" is dated January 2019.  Originally there WERE two different trays, and two different part numbers, and one (NVMe tray) had the thermal pad and the other (SATA tray) did not.

 

Apparently Lenovo has decided this is no longer necessary, but simply has not updated the P50 HMM to reflect this change.  They've clearly discontinued the older tray with the thermal pad as they've decided this is not really critical for NVMe any longer, and that the SATA tray that doesn't have that thermal pad is perfectly acceptable for both SATA and NVMe cards.

 

Ideally they would update all of their documentation to conform, and not be inconsistent like this appears.  I can't explain their actions, I'm only a user like you.  But I can say that I've heard from Lenovo engineers "in their lab" who say they simply use the one tray (without the thermal pad) for all testing on the P50 no matter whether using either SATA or NVMe cards, and they have no concern.

 

This must be the explanation for why the older tray part with the thermal pad is no longer available.  It's been discontinued, officially, even if older documentation suggests it is still alive.

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Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-05, 7:50 AM

Thanks, I hope you are right.
They didn't just haven't updated the HMM, but they also haven't informed their costumer support. They wrote me yesterday about the importance of the pad for NVMe after I asked about the versions on their site (00UR868, 00UR798 ) and the versions on Amazon (4XB0K59917  with and without pad).
Maybe the old recommendations that appears in the HMM 2017 are relevant to older P50 and the OCM 2019 is relevant to newer P50?
I read on some older threads here that when Inserting the M.2 disk upside down it just dodn't work, but when doing it in newer models it fried the disk and the port. I don't know whether it was coincidence or a different between models.

I liked Thinkpads but this is probabaly going to be my last Thinkpad and my next laptop would be from a more reliable company.

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  • Message 10 of 20

Re: P50 M.2 NVMe caddy? 4XB0K59917?

2019-01-16, 3:45 AM

I've now received what I imagine will be the final clarification from Lenovo, regarding the two M.2 trays, part numbers, and the Options Compatibility Matrix details.

 

To quote their message to me:

 

----------------------------------------------------------------------------------------------

 

To follow up, we found an error in the documentation; the FRU number was incorrect for the tray without the thermal pad. Correct is as follows:

SSD Tray with thermal pad 4XB0K59917 FRU 00UR868
SSD Tray without thermal pad 4XB0L78233 FRU 01LV977

 

Also the options matrix is going to be updated with some footnotes but basically

NVMe SSD has high power so needs the thermal pad 4XB0K59917
SATA SSD is not has high power so doesn't need the thermal pad 4XB0L78233

 

---------------------------------------------------------------------------------

 

Still no explanation as to why 4XB0K59917 isn't available for purchase any longer on the US accessories site!!!  I've responded to their message with this question, and hopefully will get some kind of sensible explanation or else an admission that this shouldn't be the case and that it is being corrected.

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