Dell OptiPlex 3040 Small Form Factor (SFF) PC you are interested in is a refurbished business desktop featuring an Intel Core i3-6400 processor, 8GB of DDR3 RAM, a 256GB SSD, and Windows 11 Pro, typically offered with a 6-month warranty. 
 

• Processor: Intel Core i3-6400 (Note: The 
  i3-6100
   is more common in listings and has a 3.7 GHz speed, while the i5-6400T variant runs at 2.5 GHz; the exact speed for the 
  i3-6400
   is not specified in sources, but it is a 6th Gen processor).
• Memory: 8GB DDR3L Long-DIMM RAM. The system has two DIMM slots and is expandable, often up to 16GB.
• Storage: 256GB SSD (often NVMe or SATA, depending on the specific refurbisher).
• Operating System: Windows 11 Pro, 64-bit edition.
• Graphics: Integrated Intel HD Graphics 530/510.
• Ports:
  • Front: 2x USB 3.0, 2x USB 2.0, 1x Universal Audio Jack (headset jack).
  • Rear: 2x USB 3.0, 2x USB 2.0, 1x HDMI 1.4, 1x DisplayPort 1.2, 1x RJ-45 Ethernet port, 1x audio line-out.
• Dimensions (H x W x D): Approximately 29.0 cm x 9.2 cm x 29.2 cm (11.4" x 3.6" x 11.5").
• Weight: Around 6.1 kg (13.22 lbs).
• Optical Drive: May include a DVD-RW drive, but often not included in refurbished configurations.
• Warranty: 6 Months Local Warranty