I received this after the internal data was removed, but it apparently can't be used as a Mac. The internal SSD has been replaced. I was thinking of tinkering with it, but I don't seem to have time to work on it, so I'm offering it for sale. Please purchase it with the understanding that it is a junk item. Boot-up confirmed. Shipping will be as a regular package, not a computer-specific package. Please be aware of this. I'm pasting the following copied from the Mac website for reference only, but it may not be compatible as the internal components have been changed. iMac (21.5-inch, Mid 2011) - Technical Specifications Display 21.5-inch (diagonal) LED-backlit glossy widescreen TFT display, supporting millions of colors Resolution: 1,920 x 1,080 pixels Processor 2.5GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache 2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache Option: 2.8GHz quad-core Intel Core i7 (Apple Online Store only) Memory 4GB (2GB x 2) 1,333MHz DDR3 memory Option: Up to 16GB (Apple Online Store only) Storage 2.5GHz 500GB (7,200 rpm) hard drive 2.7GHz 1TB (7,200 rpm) hard drive Option: Upgrade to 2TB hard drive or add a 256GB solid-state drive (Apple Online Store only) Graphics 2.5GHz AMD Radeon HD 6750M graphics processor with 512MB GDDR5 memory 2.7GHz AMD Radeon HD 6770M graphics processor with 512MB GDDR5 memory Video Support and Camera FaceTime HD camera Simultaneously supports full native resolution on the built-in display and up to a 30-inch external display (2,560 x 1,600 pixels) Supports external desktop and video mirroring modes Audio Built-in stereo speakers Built-in 17W high-efficiency amplifier x 2 Headphone output/optical digital audio output (mini-jack) Audio line input/optical digital audio input (mini-jack)