Many of today's low-end NCs come with no NFS support or only provide it as an option. HDS Network Systems, for example, makes a family of NC-compliant devices called the @workStation. In its most basic configuration, the @workStation has no file system support, although it does have a full Java implementation. More expensive @workStation configurations include full NFS support. Boundless Technology's Network Computer XL and XLC are configured similarly; Java support comes on all computers and NFS is optional.