need to find the specification of dell optiplex 775 as in the photo

PC Repair sheet Date Names Model Stepping Processor Manu Max Speed Cache Amount RAM Manu Type Number of Modules Speed Type Optical Drive Manu Model Interface Speed Model Type Hard Drive Manu Interface Capacity Speed Size Form Factor Form Factor Type Case Type Power Supply Capacity Graphics Card Manu__ Interface Model Amount of RAM Speed Heat Sink/Fan Type Manu Model Expansion Card 1 Manu Model Function _Type Model Expansion Card 2 Manu Function Type Expansion Card 3 Manu Model Function Type