Dell Optiplex 990 SFF, Core i5-2400, 3.1GHz (2nd Gen), 16GB, 1TB, DVDRW, Windows 7 Pro, *** Wi-Fi USB Adaptor ***, FREE NEW KEYBOARD + MOUSE + SPEAKER *** PLUG AND PLAY ALL-IN-ONE SYSTEM - WITH *** DELL 22" LCD Monitor *** By TDi Computer Intel Core i5 -2400, 3.1GHz (2nd Gen), 16GB DDR3 (upgradeble), 1TB (Huge Space ) Hard Disk comes with DVD Burner Wireless Wi-Fi ready (Brand NEW - USB Adaptor) Connect computer like Laptop wirelessly to internet or network cool features added FREE : Brand NEW USB keyboard, Mouse, Power Code and Speakers all necessary cables added Windows 7 pro pre-installed with recovery partition and Media. You can repair computer using our recover partition or when comes to replace a new Hard Disk our media recreated all OS and recovery partition on the new drive. No other 3rd party tech support required. with Dell 21.5" LCD Monitor --- ALL-IN-ONE DEAL EVER !!!!