2800 HD (250-3550) Catalog Listing Faxback Doc. # 1840 1839 Additional Floppy Drive 1845 Battery 1842 Features 1850 Hard Drive 1853 Keyboard Functions 1847 Math Coprocessor 1843 Memory Upgrades 1851 Options 1508 Pinouts 1852 Printer 1848 Power Management 1844 Setup 1841 Specifications 1846 Video Modes (rjs-06/29/93)