Lenovo ThinkCentre M91P SFF Small Form Factor Desktop Computer, Intel Core i5-2400 CPU up to 3.4GHz, 4GB DDR3 RAM, 500GB HDD, Windows 7 Professional (Certified Refurbished)
Key Features and Benefits:

Get reliable performance from Intel Quad Core i5-2400 Processor 4GB DDR3 memory – For multitasking power; 500GB HDD Slimline DVD-ROM drive – watch movies on your computer; read CDs and DVDs in multiple formats Enhanced viewing with the integrated Intel HD 2000 graphics Connect to a broadband modem or router with wired Ethernet The front-panel’s USB ports make it easy to transfer photos, music, and other files to and from your digital camera and other peripheral devices Microsoft Windows 7 Professional was designed for on-the-go working professionals. Connect to networks in three clicks, automatically find preferred network printers, and give professional presentations

Specifications:

Processor: Intel Quad Core i5-2400 3.1GHz (Turbo up to 3.4GHz, 6MB Cache)
Graphics: Intel HD Graphics 2000
Memory:4GB DDR3
Hard Drive: 500GB HDD
Optical Drive: DVD
Network: 10/100/1000 Gigabit Ethernet
Keyboard& Mouse: USB Keyboard & Mouse Included

Front Panel Ports:
USB 2.0: 2
Headphone: 1
Microphone: 1

Rear Ports:
DisplayPort: 1
USB 2.0: 6
VGA: 1
RJ-45: 1
Audio-in: 1
Audio-out: 1

Expansion Slots & Bays:
PCI Express x16 Low-Profile slot: 1
PCI Express x1 Low-Profile slot: 1
PCI Slots: 2
External 5.25-inch bay: 1
Internal 3.5-inch bay: 1

Product Features

• This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
• Intel Core i5-2400 CPU up to 3.4GHz
• 4GB DDR3 RAM
• 500GB HDD
• Windows 7 Professional