Both LPUs and LPU slots are purple edged for easy identification. 8 Service Card slots (LPU). Online slot/test booking system is a web-based online scheduling system through which candidates may book the slot for appearing in the LPUNEST Candidates. 3. "LPU" in Figure refers to an interface module, "SFU" refers to a single-chassis. The chassis has eight LPU slots. . The chassis has 16 LPU slots. Power supply section. LPU slot, Slots 1 to 16, The top of the board faces upwards, Different types of LPUs can be installed in the same chassis. The chassis has four LPU slots. IMPORTANT DATES OF LPUNEST ; Online Registration Starts on, 16th October , 26th January ; Slot booking for online examination, 1st January onwards*. Slot arrangement. E switch— It is the responsibility of the applicant to book their test schedule in Online Slot Management System in the given time frame if he/she has chosen that booking. The chassis has 12 LPU slots. No LPUs are shipped with the chassis. 6 Switch Fabric slots (SFU);. 16 Service Card slots (LPU). 10 LPU slots are available on an HPE AC switch. CE 2 Control Card slots (MPU);. 2. Physical Parameters. MPU slot, Slots The LPU edges, the ejector levers on an LPU, and the ejector lever seats at both sides of an LPU slot have purple marks.