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---
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layout: doc
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title: Hardware Compatibility List (HCL)
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permalink: /doc/hcl/
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redirect_from:
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- /en/doc/hcl/
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- /doc/HCL/
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- /wiki/HCL/
- /wiki/HCLR1/
- /wiki/HCL-R2B2/
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---
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Hardware Compatibility List (HCL) for All Qubes OS Releases
===========================================================
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The [HCL ](/hcl ) is a compilation of reports generated and submitted by users across various Qubes versions.
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**Note:**
Except in the case of developer-reported entries, the Qubes team has not independently verified the accuracy of these reports.
Please first consult the data sheets (CPU, chipset, motherboard) prior to buying new hardware for Qubes.
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Meet the [System Requirements ](/doc/system-requirements/ ) and search particular for support of:
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- HVM ("AMD virtualization (AMD-V)", "Intel virtualization (VT-x)", "VIA virtualization (VIA VT)")
- IOMMU ("AMD I/O Virtualization Technology (AMD-Vi)", "Intel Virtualization Technology for Directed I/O (VT-d)")
- TPM ("Trusted Platform Module (TPM)" connected to a "20-pin TPM header" on motherboards.)
Test the hardware yourself, if possible.
If using the list to make a purchasing decision, we recommend that you choose hardware with:
- the best achievable Qubes security level (green columns in HVM, IOMMU, TPM)
- and general machine compatibility (green columns in Qubes version, dom0 kernel, remarks).
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Generating and Submitting New Reports
-------------------------------------
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In order to generate a HCL report in Qubes, simply open a terminal in dom0 (KDE: start-menu -\> System Tools -\> Konsole or Terminal Emulator)
and run `qubes-hcl-report <vm-name>` , where `<vm-name>` is the name of the VM to which the generated HCL files will be saved.
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(Note: If you are working with a new Qubes installation, you may need to update your system in order to download this script.)
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You are encouraged to submit your HCL report for the benefit of further Qubes development and other users.
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If you would like to submit your HCL report, please send the **HCL Info** `.txt` file to [\`qubes-users@googlegroups.com\` ](/doc/mailing-lists/ ) with the subject `HCL - <your machine model name>` .
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Please include any useful information about any Qubes features you may have tested (see the legend below), as well as general machine compatibility (video, networking, sleep, etc.).
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If you have problems with your hardware try a different kernel in the [Troubleshooting menu ](/doc/InstallationGuideR2rc1/#troubleshooting-problems-with-the-installer ).
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Please consider sending the **HCL Support Files** `.cpio.gz` file as well.
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**Please note:**
The **HCL Support Files** may contain numerous hardware details, including serial numbers. If, for privacy or security reasons, you do not wish to make this information public, please **do not** send the `.cpio.gz` file to the public mailing list.
