**Item Description:** Up for sale is a vintage **Apple Lisa CPU Board** (Part Number: **820-4009-B** /  . This is a rare piece of computing history, originally used in Apple Lisa, Lisa 2, or Macintosh XL systems from the early 1980s. **Condition:** * **Untested / AS-IS:** This board is completely untested because I do not have a compatible Apple Lisa system, power supply, or peripherals to test it. * **No Battery Corrosion:** Please note that this specific CPU board model does not have an onboard battery, so there is absolutely **no battery leakage or acid corrosion** on the PCB. * **Cosmetic Status:** Physically, the board is very clean and appears to be in good cosmetic condition for its age. Please review the high-resolution photos carefully to assess the condition of the components, traces, and sockets. **Terms of Sale:** * Sold strictly **AS-IS, for parts, repair, or restoration** only. * No returns, refunds, or exchanges due to the untested nature and age of this vintage hardware. * What you see in the pictures is exactly what you will receive.