Dell Express Flash NVMe PCIe SSD 9550 U.2 and E3.S ISE Firmware Maintenance Release

Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
Dell Express Flash NVMe PCIe SSD 9550 U.2 and E3.S ISE Firmware Maintenance Release
Recommended

Check compatibility

Enter your Dell Service Tag or model

Want to look up your product? Enter a product identifier. Show me how

This driver is not compatible

This driver is not applicable for the selected product. Choose another product to re-enter your product details for this driver or visit the Product Support page to view all drivers for a different product.

Find more updates. Use SupportAssist to find all the latest driver updates for your device.

Fixes & Enhancements

Fixes:
TBD

Enhancements:
TBD
Read More

Version

1.1.0, A01

Release date

24 Apr 2026

Download Type

Firmware

Category

Solid State Storage

Importance

Recommended
Dell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats View Important Information
File Format: Update Package for MS Windows 64-Bit.
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_WN64_1.1.0_A01.EXE
File Size: 27.22 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
Dell Update Packages in native Microsoft Windows 64-bit format do not require that Microsoft WOW64 be installed on the Microsoft Windows Server.
To ensure the integrity of your download, please verify the checksum value.
MD5:
0336a2d5c2ee3873bf7e6ab1aac8e134
SHA1:
f7b2eb044669c1ec66c5ce0234987b1aa1c7f2d6
SHA-256:
bd34c116babb0ec39ce1452148cc809701e62acd89364fa60cec63c0fc44d1ae
File Format: GnuPG Signature for Linux ARM Update Package
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_LNARM64_1.1.0_A01.BIN.sign
File Size: 842 Bytes
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
The GPG signature for Linux ARM update package can be used to verify the authenticity of the associated Linux ARM DUP. You can download from Dell download page.
To ensure the integrity of your download, please verify the checksum value.
MD5:
10bf3de3f79f65cc2b40a1c9ba51eb53
SHA1:
d7129de343843613aea738dcbceff1d324ed2d32
SHA-256:
f1aa6d795ea5a4df7f20c3c4063e161ac143e93734c71176851309f93d9c2052
File Format: A GnuPG file which contains a cryptographic signature
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_LN64_1.1.0_A01.BIN.sign
File Size: 842 Bytes
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
The GnuPG signature for Red Hat Linux Update Package can be used to authenticate Dell's identity in the correlated Red Hat Linux Update Package.
To ensure the integrity of your download, please verify the checksum value.
MD5:
d8003c8c3c8eb4c94a9bfbfeca0aeeef
SHA1:
63b3dab9b1939ea98f351935b526b2762d708664
SHA-256:
6364c84f2c0d83cac34df7756dfa1b383523500d85f578f177573077ebf18a76
File Format: External release notes
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_1.1.0_A01.txt
File Size: 5.43 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format contains plain text which can be viewed with a standard text editor.
To ensure the integrity of your download, please verify the checksum value.
MD5:
2562eabcc2411cad3d6e8009fe43b4dc
SHA1:
d0284723b39b2035773b861ccd1b0ea53e362a96
SHA-256:
470f90e865cd99484130a50be8186fe1b28262e5e87555bcfcffb60e3f689b83
File Format: Update Package for Linux ARM 64-Bit
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_LNARM64_1.1.0_A01.BIN
File Size: 10.08 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
The Linux ARM update package can be used to update driver/firmware for a Linux ARM based server. You can download from Dell download page.
To ensure the integrity of your download, please verify the checksum value.
MD5:
9a8287de5a0a749c8a01921975b0d7c5
SHA1:
93f1dc8ae530de04ae41703953add8ac518943d2
SHA-256:
af63376d4c37d1957c8403d814c18832797ef4696264b90c4c45566ef98f3dce
File Format: Update Package for Red Hat Linux
File Name: Express-Flash-PCIe-SSD_Firmware_4WN4V_LN64_1.1.0_A01.BIN
File Size: 10.51 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
Dell Update Packages for Linux can be used as stand-alone applications that ensure that specific validation criteria are met, then apply an update.
Note: Update Packages for Linux are open source. See the Dell Update Packages for Linux Readme for details.
To ensure the integrity of your download, please verify the checksum value.
MD5:
f97c5d8e61e19a8e23caecb5e3cb797b
SHA1:
fd0c7af64f0614f48de853eea0c55fec877180fc
SHA-256:
8bd0719a8d40e88f575fc341c45e61277369853a9f688ef70341abd2194d024d

By downloading, you accept the terms of the Dell Software License Agreement.

Additional details

Show All | Hide All
N/A
AZURE STACK HCI
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10
Red Hat® Enterprise Linux 8
Red Hat Enterprise Linux 9
SuSE Linux ES 15
SUSE Linux ES 16 - Update 0 x64
Ubuntu Server 26.04 LTS
Ubuntu Server 24.04 - U3
Windows Server 2022 LTSC
Windows Server 2025 LTSC
VMware ESXi 7.0
VMware ESXi 8.0
VMware ESXi 9.0
ESXi 9.1 - U1
Dell Ent NVMe AG MU E3.S GEN5 12.8TB
Dell Ent NVMe AG MU E3.S GEN5 25.6TB
Dell Ent NVMe AG MU E3.S GEN5 3.2TB
Dell Ent NVMe AG MU E3.S GEN5 6.4TB
Dell Ent NVMe AG RI E3.S GEN5 15.36TB
Dell Ent NVMe AG RI E3.S GEN5 3.84TB
Dell Ent NVMe AG RI E3.S GEN5 7.68TB
Dell Ent NVMe AG RIE3.S GEN5 30.72TB
Dell Ent NVMe MU AG U.2 GEN4 25.6TB
Dell Ent NVMe MU AG U.2 GEN5 3.2TB
Dell Ent NVMe MU AG U.2 GEN5 6.4TB
Dell Ent NVMe RI AG U.2 GEN4 30.72TB
Dell Ent NVMe RI AG U.2 GEN5 15.36TB
Dell Ent NVMe RI AG U.2 GEN5 3.84TB
Dell Ent NVMe RI AG U.2 GEN5 7.68TB
Firmware Update using Dell Update Package (DUP)

Dell Update Package (Windows):
Download the executable from support.dell.com. This package can be executed from the operating system.
Installation
1. Browse to the location where you downloaded the file and double-click the new file.
2. Click the "Install".
3. Follow the remaining prompts to perform the update.

Dell Update Package (RHEL/SLES):
Download the executable from support.dell.com. This package can be executed from the operating system.
Installation
1. Browse to the location where you downloaded the file and run the update by executing "./Express_Flash_PCIe-SSD_FRMW_LX_....BIN" from the shell.
2. Follow the remaining prompts to perform the update.

GnuPG Signature of Dell Update Package Instructions for Express_Flash_PCIe-SSD_FRMW_LX_....BIN.sign:

Download
Download the latest GnuPG Signature of Dell Update Package from support.dell.com.

1. Browse to the location where you downloaded the file.
2. Read over the release information presented in the dialog window.

Installation
1. Import the Dell public key. (You only need to do this once on your system.)
2. Verify the Dell Update Package by using its signature file, Express_Flash_PCIe-SSD_FRMW_LX_....BIN.sign

Drivers help and tutorials