Mac OS X 10.11 pre-installed - unit is downgradable to older OS X. Intel Core 2 Duo E8135 2.66 GHz processor. 1066 MHz bus speed, 6 MB L2 cache. 4 GB DDR3 SDRAM (8 GB maximum supported).
320 GB 7200 RPM Serial ATA hard drive. Slot-loading 8x DVD±RW DL drive. NVIDIA GeForce 9400M with 256MB of DDR3 SDRAM shared with main memory.Built-in stereo speakers with 24-watt digital amplifier. Built-in AirPort Extreme Wi-Fi (802.11n). Built-in Bluetooth 2.1 + EDR Enhanced Data Rate. Built-in 20-inch (viewable) glossy widescreen TFT active-matrix LCD (1680 x 1050).
Four (4) USB 2.0 ports. Two (2) USB 2.0 ports on included keyboard.One (1) FireWire 800 port, 7 watts. One (1) RJ-45 Ethernet port. Optical digital audio output/headphone out.
Optical digital audio input/audio line in. Mini DisplayPort output with support for DVI, dual-link DVI, and VGA video connections via adapter (adapter not included). 100-240V 50/60 Hz 3.0A. 18.5 x 19.1 x 7.4-inches. Highly recyclable aluminum and glass enclosures.Meets ENERGY STAR 5.0 requirements. Notes: some units may have a slight scratch or ding. Includes OEM mouse and keyboard. This item is in the category "Computers/Tablets & Networking\Desktops & All-In-Ones\Apple Desktops & All-In-Ones". The seller is "stock4less" and is located in this country: US. This item can be shipped worldwide.