Right now, there are two classes of DLNA CERTIFIED devices: Digital Media Servers (DMS) and Digital Media Players (DMP). Player devices (DMP) can find and play or display the content that is shared on your network by server devices (DMS). Some examples of DMP products are TV monitors, stereo systems, home theaters, printers, personal digital assistants, multimedia mobile phones, wireless monitors and game consoles.
Server devices (DMS) can record and store media content, and share this on the network - where this is allowed by content protection rules. Some examples of DMS products are advanced set-top boxes, digital video recorders, PCs and laptops, stereo and home theaters with hard disk drives (for example, music servers), broadcast tuners, video and imaging capture devices such as cameras and camcorders, and multimedia mobile phones.
But the DLNA guidelines are very flexible. Some devices offer rich user interfaces and some do not. With some server devices you can also manage your media collection or manage other devices on the network. Some server devices can also be player devices: a laptop can share, but also play its content.