Blank module with conduit retainer

An optical module blank includes a base portion, and a pair of retainers disposed on the base portion. The pair of retainers retains conduits at a predetermined location of the base portion to enable the conduits to be connected to an optical component, such as a laser module, if the optical module blank is replaced with an optical module. A line module of an optical communications equipment may be populated with one or more optical module blanks. However, if the entire line module is to be totally populated with optical module blanks, then a line module blank may be used. Such a device includes a tray portion, and a retainer portion disposed on a front section of the tray portion. The retainer portion has abutting base plates with four pairs of retainers disposed on one base plate and another four pairs of retainers disposed on the other base plate. The pairs of retainers retain conduits at predetermined locations of the base plates to enable the conduits to be connected to optical components if the line module blank is replaced with a line module.