Before downloading a manual, you must find the true model number (often formatted as "MS-xxxx") printed directly on the PCB. Physical Inspection
Since the N1996 label is generic, you must look for the true model name printed directly on the PCB (the circuit board). Between the PCI Slots: Look for text like "MS-7255" or "K9N6PGM2-V." Near the CPU Socket: msi n1996 motherboard manual book pdf