It works properly and has passed all diagnostics. See damage to top handles.The model number A1289 refers to the first generation of "cheese grater" tower Mac Pro models released by Apple between 2009 and 2012 (including the Early 2009, Mid-2010, and Mid-2012 variants, as well as server configurations).
Key Specifications

• Form Factor: Brushed aluminum tower.
• Processors: Intel Xeon quad-core, hexa-core, or dual-processor setups (Nehalem and Westmere architectures).
• Memory: Up to 48GB–128GB RAM depending on the specific logic board and processor configuration.
• Storage: Four internal 3.5-inch drive bays
• Modern Status: Out of the box, these machines are obsolete and cannot run modern macOS versions natively.
• Community Consensus: Users on Reddit share mixed opinions, noting that while they are too slow for stock daily use, opinions on MacRumors Forums point out they can still function for retro gaming, basic server tasks, or audio/video work if heavily upgraded with modern PCIe SSDs, upgraded GPUs, and patched operating systems via OpenCore Legacy Patcher.