4020 SX (250-4902/3) Catalog Listing Faxback Doc. # 1600 1606 Additional Drives 1605 Battery 2410 Beep Codes 1614 Board Layout 1608 Built-in Utilities 1609 Hard Drive 1607 Math Coprocessor 1616 Memory Managers 1602 Memory Upgrades 1612 Options 1613 Parallel Port 1604 Pinouts 1603 Setup 1617 Settings 1601 Specifications 1615 Troubleshooting 1611 Video Memory Options 3312 Smartdrives (jej-12/09/94)