79 – MPS710c User’s GuideAvailable OptionsSee the instructions supplied with the options.Duplex (two-sided printing) Unit ___Oki P/N 43830005The duplex unit adds the function of two-sided printing, using lesspaper and making large documents easier to handle. It alsoenables booklet printing, which uses even less paper and makeslarge documents even easier to handle.The duplex unit slides straight into the rear of the printer andrequires no tools to install.Additional RAM Memory __________Oki P/N 43363304 (256 MB), 43363305 (512 MB)The basic printer model comes equipped with 256MB of mainmemory. This can be upgraded with an additional memory boardof 256MB or 512MB, giving a maximum total memory capacity of768MB.Installation takes a few minutes, and requires a medium sizecross-head (philips type) screwdriver.