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Dell Inspiron 15 7559 PCIe SSD ?


DasPez

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Hi everyone,

I'm very happy with this laptop but there is an empty M.2 slot waiting to be filled. The connector seems to offer the right pins for a PCIe x4 SSD like the SM951 but someone at Notebookreview reported that this particular model dosent work. Is it possible that NVME is the problem and other PCIe SSDs should work? Could a BIOS mod help (like inserting BIOS modules)? Can I somehow determine whether the hardware supports PCIe x4 in this M.2 port?

I tried reading the PCIe configuration of the CPU with Linux, but can't interpret the result... 

root@ubuntu:/home/ubuntu/Desktop# bash listpcie.sh -t
J6B2: x16 PCI Express
J6B1: x1 PCI Express
J6D1: x1 PCI Express
J7B1: x1 PCI Express
J8B4: x1 PCI Express

root@ubuntu:/home/ubuntu/Desktop# bash listpcie.sh -l
J6B2: Intel Corporation Sky Lake PCIe Controller  
    Flags: bus master, fast devsel, latency 0, IRQ 122
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    Capabilities: [88] Subsystem: Intel Corporation Device 2015
    Capabilities: [80] Power Management version 3
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [a0] Express Root Port (Slot+), MSI 00
    Capabilities: [100] Virtual Channel
    Capabilities: [140] Root Complex Link
    Capabilities: [d94] #19
    Kernel driver in use: pcieport

J6B1:
J6D1: Intel Corporation Sunrise Point-H PCI Express Root Port #5 
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
    I/O behind bridge: 0000d000-0000dfff
    Memory behind bridge: df300000-df3fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Dell Device 0706
    Capabilities: [a0] Power Management version 3
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Access Control Services
    Capabilities: [220] #19
    Kernel driver in use: pcieport

J7B1: Intel Corporation Sunrise Point-H PCI Express Root Port #6 
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
    Memory behind bridge: df200000-df2fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Dell Device 0706
    Capabilities: [a0] Power Management version 3
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Access Control Services
    Capabilities: [200] L1 PM Substates
    Capabilities: [220] #19
    Kernel driver in use: pcieport

J8B4: Intel Corporation Sunrise Point-H PCI Express Root Port #7 
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Bus: primary=00, secondary=06, subordinate=06, sec-latency=0
    Memory behind bridge: df100000-df1fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Dell Device 0706
    Capabilities: [a0] Power Management version 3
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Access Control Services
    Capabilities: [220] #19
    Kernel driver in use: pcieport

Maybe someone with a little bit more experience knows what that means. :)

Edited by DasPez
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  • 4 months later...

Hello,

 

I know it is a bit late to answer but I am asking me the same question at the moment. 

I have the 2nd 7559 model with 8GB RAM, which doesn't have any SSD, I thing the same as you

 

First of all, since you doesn't see the second HDD in your BIOS, you can stop to try to see it on the OS because it will never find it because of the BIOS... (when entering the BIOS : Main > Second HDD -invisible for me-)

 

I called the Dell support for more information and they told me that the hardware (mother brand) is completly compatible with this kind of SSD. The only thing is that my BIOS doesn't reconise it.. I'm pretty sure that it is just a BIOS problem because my SM951 doesn't work but a m.SATA work completly well (a 128gb SSD m.2 coming from the same 7559 but with 16Gb ram + 1To + 128GB SSD)

 

The m.2 SSD with this 16Gb RAM model is a m.SATA version and the SM951 is a PCIe. I think THIS is the reason why we cannot see the SM951.

 

I asked them to make a new update of the BIOS to be compatible. I hope it'll come asap as possible. BIOS v1.0.3 seems to support both but doesn't work at all; so it confort me in the idea that it is just a technology compatibility problem (m.SATA & PCIe).. (in the 16Gb RAM version, the BIOS versions are the same)

 

I stay informed !!

 

Regards

 

Yoann

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