A case for a liquid submersion cooled computer includes a plurality of walls defining a liquid-tight interior space. At least a portion of one of the walls is made of a material that permits viewing of objects, for example, a motherboard, within the interior space. A removable lid closes the top of the interior space. The lid forms a liquid-tight seal with the plurality of walls, and the lid includes a sealed electrical connector fixed thereto that is configured to attach to the motherboard disposed in the interior space and to provide electrical connection between the motherboard and an exterior of the case. The case can include a drain valve for draining liquid from the case. Further, the lid can have an opening for introducing liquid into the interior space, and a handle to facilitate lifting of the lid along with the motherboard connected to the lid.