SUSE Linux Enterprise 11 SP42015/11/25
Please read about SUSE Linux Enterprise Server 11 SP4 on the site below.
This is not free product, so it's necessarry to buy a pre-installed computer or subscription to use it.
However, there is a Evaluation version of SLES for 60 days free.
It's possible to download it from the site below.
(It's necessary to register on customer center before downloading)