Dell OptiPlex E1 - Manual (Page 24)

Tech Notes: Dell™ OptiPlex™ E1 Systems
Video
Memory
Expansion Subsystem
Power
Hard-Disk Drive Options
I/O Map
POST Beep Codes
NIC
System Error Messages
IRQ Assignments
DMA Channel Assignments
System Setup
Updated System Setup Categories
Drivers and Utilities
Microsoft Updated ATAPI Driver
Removing and Replacing Parts
Wakeup On LAN