# Linux support for AWS CloudHSM Client SDK 3
<a name="sdk3-linux"></a>

AWS CloudHSM Client SDK 3 supports the following Linux operating systems and platforms.
+ Amazon Linux
+ Amazon Linux 2
+ CentOS 6.10\$1 2
+ CentOS 7.3\$1
+ CentOS 8 1,4
+ Red Hat Enterprise Linux (RHEL) 6.10\$1 2
+ Red Hat Enterprise Linux (RHEL) 7.3\$1
+ Red Hat Enterprise Linux (RHEL) 8 1
+ Ubuntu 16.04 LTS 3
+ Ubuntu 18.04 LTS 1

[1] No support for OpenSSL Dynamic Engine. For more information, see [OpenSSL Dynamic Engine](sdk3-compare.md#openssl-collapse).

[2] No support for Client SDK 3.3.0 and later.

[3] SDK 3.4 is the last supported release on Ubuntu 16.04.

[4] SDK 3.4 is the last supported release on CentOS 8.3\$1.