Amazon.com: for DELL Optiplex Power Adapter ADP-220AB B DA-2~12V 18A~ 8 Pin Y2515 : Electronics
Genuine Dell N112H 12V 18A 220W 8 Pin AC Power Adapter DA-2 Series D22
Dell D220P-01 DA-2 Series AC/DC Adapter 8 Pin 12V for Optiplex SX280/GX620 21-4 | eBay
MK394 For Dell OptiPlex Desktop 220W DA-2 Power Supply - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.