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Questions tagged [pci-express]

PCI-Express is a high-speed expansion bus which is developed to replace older buses such as PCI and AGP. The most common use of PCI-Express is the GPU installation on motherboards.

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Mounting disk images on SSDs of different interfaces

I was planning to upgrade my PC's main drive ( local drive(C:)) to something with higher data transfer rates and larger storage capacity. I was going to run an image backup on my current SSD that's ...
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PCIe “lanes” and splitting them for Graphics cards

I'm a sysadmin who is lost in the world of Graphics cards and PCIe lanes. Can someone please explain how it works without assuming that I know the basics of graphics cards? Lets take the following ...
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PCIe, PCH and lanes count

Good time of the day! I will get straight to the question, since i was not able to find any related information (at least 2 sources with the same data) about the amount of lanes available to the ...
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Motherboard says PCIe 3.0, but chipset only supports PCIe 2.0. Who's right?

As part of integration testing for our product, we received a client machine with a Supermicro X10DRi motherboard in it, with 2 Xeon E5-2620 v4 CPUs and a Quadro P5000. That motherboard is using the ...
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WindowsKernelModeDriver10.0 Issue

We are using Virtex-6 and try to use an FPGA board to send MSI by means of pciE. For this purpose, we install the necessary Jungo Drivers and libs even though we are facing a problem when we are ...
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19 views

Add PCIE SATA on motherboard for connecting to SSD

I currently have a very old motherboard and have recently bought an SSD. I then realized that my motherboard only supports 3Gbs SATA so it will bottleneck the SSD. I have the following motherboard: ...
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Add-on cards disabled M.2 SSD slot of Asus Prime B350M-A motherboard

Need help from experienced rig builders. I am using KingSpec 512Gb NVMe SSD on M.2 onboard slot, it ran fine for one month. Yesterday I tried to plug another SSD of the same model through expansion ...
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PCIe EP device getting failed to enumerate always

I have a pcie EP(Endpoint) device & host Linux PC is acting as RC(Root-Complex). Setup Info: For Linkup, I turn on the host PC & then turn on EP device (as the clock is coming from host PC) &...
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Manually executing option roms (PCIe SATA storage card) [migrated]

I have an older Dell server, a Poweredge 2900 II, and I would like to use it with large HDDs (> 8 TB). For this, an expansion card is needed, since the motherboard nor the PERC RAID controller can ...
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51 views

Effective bandwidth of mismatched PCIe card and slot

What happened if : x16 PCIe 2.0 card into x16 PCIe 3.0 slot (but electrically x8 link due to sharing) x16 PCIe 3.0 card into x16 PCIe 2.0 slot (but electrically x8 link due to sharing) x8 PCIe 3.0 ...
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Is it dangerous for the pc desktop health to remove a couple of PCI slot covers from the case?

I'd like to know if could be dangerous for the pc health to remove the backside steel pci covers, since I lost a couple of them. Could the dust be filled inside even if it's a miditower and so it's ...
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M.2 direct motherboard connection vs. M.2 to PCIe adapter with heatsink

Suppose I have a motherboard that has a direct connection for a M.2 NVMe and that same motherboard has PCIe 3.0 x16 connectors and that it can be configured to boot through NVMe. So technically both ...
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Why doesn't CrystalDiskInfo see my HBA-connected SSD?

I recently bought a PCIe-based HBA (Host Bus Adapter) (i.e. a PCIe-to-SATA card) to add an additional two SATA ports to my current system. The HBA has been working fine, and shows up in Device Manager ...
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PCI-e Serial Adapter RS-232/422/485 drivers

Excellent 2019 to each of you ! I bought the PEX4S232485 from StarTech couple of months ago to only have it mounted into a Debian Server (Stretch) today. I confess I jump on that board without ...
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PCIe slots and SLI enabled on mobo

I'm building a workstation with a GTX 1080 Ti on a MSI x470 mobo. The main difference between the GAMING PRO CARBON and the GAMING PRO, is the SLI support which is on only for the first one. I'm ...
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SSD shows up at first but after a restart it dissappears?

I just got a Samsung 970 evo 250gb ssd to put windows and a few games on. My motherboard is a Gigabyte GA-B85-HD3 so it did not have a m.2 slot so I am using a m.2 to pcie adapter. At first right ...
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What are the possible repurcussions of unplugging an eGPU without ‘ejecting’ it?

So, at least on macOS, your computer may complain when you simply unplug a Thunderbolt / PCIe GPU: I've basically been ignoring this, so far — when my computer is asleep, it takes a substantial time ...
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Mobo and SLI support

I'm not an expert of SLI technology, but I know that the mobo must support the SLI and there is also the BRIDGE SLI to connect the GPUs. I have two questions: is the Bridge SLI mandatory? if the mobo ...
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can't see the logical interface of Arcnet PCI20EX-CBX card (Ubuntu 14)

I have a PCI Express card with BNC Port, its an Arcnet PCI20EX-CBX of Contemporary Controls, normally, ubuntu has its own driver for this card implemented in the kernel under the name of : Com20020 or ...
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Asus Zenith Extreme x399 + 2990wx -> PCIe lanes

I am planning to build home workstation for gaming / virtualization based on subj. According to the 2990wx topology (i.e. here https://www.gamersnexus.net/news-pc/3350-threadripper-2-specs-price-...
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Bootable PCIe slot options on older computers?

On everything I have researched, everyone has said they have had success and it is no problem to get a PCIe SATA controller and boot from it on an older computer. 3-in-1 PCIe controller example. 2 ...
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Could I “plug and play” a POST card?

I have just one PCI POST card and a number of PC. I want to inspect booting process of each, in a manner, that if one is successfully booted (code 00 or code FF typically) - i need to eject POST card, ...
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How do PCIe to SATA expansion cards work, and does my PC support them?

I've recently been looking into getting a PCIe to SATA expansion card, which I think is otherwise known as a port multiplier (which was the first result in Google when I searched for such an adapter). ...
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where can I find a chart showing the bus lane requirements for the latest co-processors [closed]

I've got a computer with limited pci-e lanes (1 16< 3.00 2 4< 3.00 one 1< and also two m2 drives). and I want to make the most of it, Is there a reliable source of information on the bus lane ...
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Change disk number in Disk Management for PCIe SSD and SATA HDD

It's not a big issue but I find it quite annoying. My SSD has OS and is PCI NVMe, while 2nd disk is SATA HDD. For some reason, Window detect them in reverse order with 0 = HDD, 1 = SSD. Is it ...
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263 views

How to understand lspci tree format?

I use a Dell G3 3579 to run the lspci -tvv command. Here is the output: -[0000:00]-+-00.0 Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers +-01.0-[01]----00.0 ...
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1answer
114 views

Can I switch PCIe slot of boot NVME SSD to another without having to reinstall Windows?

My computer has PCIe (NVME) SSD with an adapter that was placed in Slot 2 but now, I need to switch it to Slot 3. Can I do that without having to reinstall OS after the switch? This question might be ...
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71 views

PCIe SSD on USB

I have a PCIe NVMe SSD, the Samsung PM951, taken from a Lenovo Ideapad 700-15ISK, which is dead, for data recovery. So far I've not been able to find a way to connect this SSD to another PC externally....
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176 views

lspci output of NVMe SSD in M.2 slot

I am developing some system management scripts and was wondering if a M.2 NVMe slot on the motherboard shows up in lspci output? Unfortunately, I don't have the hardware currently to test this (I have ...
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Can I have a usb 3.0 adapter for PCI, my PC does not have extra PCI e port

My problem is my motherboard has 2 PCI port and one PCI Express* x16 port. I really wish to have both usb 3.0 card adapter in my PC as well as a graphics card. It's very old, and I don't plan to get a ...
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PCIe Endpoint to System Memory /Endpoint Transaction

I have PCIe Endpoint & Root Complex will be PC running linux.Now, I want to send few bytes(say, 4 bytes) from EP to system memory (RC) using PCIe Memory Read Request (TLP) Example of PCIe Memory ...
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1answer
51 views

GTX1080 no video after installing GPUTweakII [closed]

So as the title says I installed GPUTweakII and restarted after installing, now I have no graphics output and I keep getting post code d6 on my MSI x370 motherboard even with my GTX1080 installed. No ...
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67 views

PCI-power cable to two molex female connectors

I want to put two PCIe cards with molex power connector and ideally one more PCIe card with SATA connector into my computer. Unfortunately, I can not find any power cables from my PSU to power the ...
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PCIe Wireless Card vs. USB dongle [closed]

My laptop's wireless card uses the older wireless 802.11n protocol, and I would like to upgrade to the 802.11ac protocol. So, I can either use a new mini PCIe wireless card or use a dual-band wifi ...
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PCIe Source And Destination Address for EDMA

I have Designware(Synopsys) PCIe Controller supporting both EP(End-Point) as well as RC(Root Complex) functions.For the implementation scenario, this controller will be configured as EP & RC will ...
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50 views

Possibilities to increase overall USB 2.0 devices throughput with PCIe expansion card

I've checked most of the U3/U2 bandwidth questions on-line, but still have some confusions. I understood that, if I had one USB 2.0 controller and one USB 3.0 controller in my laptop, even if I ...
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How do I make M.2 PCIe SSD drives non-removeable in Windows 10?

For the first time, I've built my own computer. I bought a M.2 SSD (specifically the ADATA XPG SX6000 M.2 2280 PCIe Gen3x2 SSD - 512GB) and slipped it into the Ultra M.2 slot on the back side of my ...
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Stop windows from auto name PCI network card

When I install a pci network card windows auto names the port names and seems to completely ignore the correct ordering of the ports. Whether the ports are number 1-4 left to right or right to left on ...
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1answer
96 views

Bandwidth with NvLink for a graphics card

I'm reading the NvLink specs and there's a table which says Semiconductor|Interconnect| Sublink data-rate per data direction | Total data rate (out+in) Nvidia V100 |NVLink 2.0 | 200 Gbit/s = 25 ...
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Troubleshooting “Hard Drive Not Installed”

I have a Dell XPS 13 laptop that has stopped recognizing the hard drive. The hard drive is a SK Hynix 256 GB SSD (PCIe NVMe M.2) [1]. I have having an extremely difficult time determining whether ...
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2answers
4k views

Motherboard UEFI doesn't detect M.2 SSD drive

I'm building a brand new PC with an ASUS PRIME Z370-A motherboard and a Samsung SSD 970 EVO NVMe M.2 250GB. However, my motherboard does not seem to be able to recognize the drive as the it neither ...
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1answer
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Connecting PCIE connectors to gigabyte gtx 770 2gb windforce

I have got a Gigabyte Gtx 770 2gb Windforce Image of GPU connector My PSU is Thermaltake litepower 550w that has two 6+2 pin PCIE connectors . Out of those 6 pin connectors one 6 pin is ahead of ...
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SAS-HBA not working in 2nd GPU-Slot (Z68X)

I got this rig: Intel i7 2500K Gigabyte Z68X-UD3H-B3 rev1.0 Gigabyte GTX970-G1 16GB Corsair XMP Windows 7 x64 Now I added a LSI SAS3801E Host Bus Adapter to connect a LTO-drive, though while the ...
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Are PCIe devices designed to use in multi-platform and architectures?

Some PCIe devices contain "PCI Expansion ROM" or "PCI Option ROM", which stores programs to initialize the devices. Now let's say I have a PCIe RAID controller, which is usually used on x86 machines. ...
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Will I be able to boot with an NVME M.2 SSD with an adapter on my MSI H110M PRO-VH PLUS?

My MSI H110M PRO-VH PLUS motherboard has the following slots: PCI-e v3 x16 (1) (Used by graphics card) PCI-e v? x1 (2) SATA III (4) The firmware (EFI) is American Megatrends V1.2 I'm planning on ...
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1answer
97 views

PCI-e X 16 vs x8

I am about to build my own DL workstation with 4 GPUs (GTX 1080 Ti) to test several models in parallel. - The mobo I intend to use is the ASUS WS X299 SAGE LGA 2066 (7 PCIe 3.0/2.0 x16 (single x16 or ...
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2answers
56 views

How M.2 SSD could aftect other PCIe devices (4x 1080Ti)?

I have dataset which consist of jpg files with size 100-300 KB with overall size of ~100 GB. Which I want to read fast and in random order. I have a server with ASUS x99-E WS motherboard with x4 ...
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224 views

Unable to determine PCI-e version in Linux terminal (Ubuntu 18)

I am looking forward to upgrade my desktop GPU. First of all, I need to know what kind of PCIe slot I have. My home desktop is Asus with H81M-E/M51AD/DP_MB motherboard which has 2x single PCIe slots ...
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318 views

PCI-Express NVME SSD and HP DL380 G7 Compatibilty

I have a HP DL380 G7 which I use a make-shift SAN in my Lab setup. I decided I wanted to add some fast SSD storage, and opted to try out a Western Digital NVME SSD coupled with an NVME -> PCI-Express ...
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1answer
48 views

Shielding on network cards - why it's used?

I noticed that plenty of enterprise grade network adapters use weird metal "fences" near pci-e connector. I think it's kind of shield isolating NIC from motherboard but to be honest... Why do we need ...