The Mac mini "Core 2 Duo" 2.66 (Mid-2010) technically is a "configure-to-order" configuration of the Mac mini "Core 2 Duo" 2.4 (Mid-2010), but also is documented as a separate model for reader convenience. Other than processor, these two models are identical.

The Apple Mac mini "Core 2 Duo" 2.66 (Mid-2010/Aluminum Unibody) features a 2.66 GHz Intel "Core 2 Duo" (P8800) processor, a 3 MB on-chip level 2 cache, a 1066 MHz frontside bus, 2 GB of 1066 MHz DDR3 SDRAM (PC3-8500) memory, a 320 GB 3 Gb/s Serial ATA hard drive, a slot-loading 8X double-layer "SuperDrive", and a NVIDIA GeForce 320M graphics processor with 256 MB of memory shared with the system.

Connectivity includes an HDMI and a Mini DisplayPort, a Firewire "800" port, four USB 2.0 ports, combined "audio line in (digital/analog)" and combined "audio line out/headphone (digital/analog)" minijacks, a 10/100/1000Base-T Gigabit Ethernet port, built-in AirPort Extreme (802.11a/b/g/n), and Bluetooth 2.1+EDR, in addition to an SD (SDXC) card slot.

Unlike earlier Mac mini models, which use a polycarbonate case, the "Mid-2010" line uses a "Unibody" case -- milled from a single block of aluminum -- with a "spin off" black plastic base on the underside that makes it easy to upgrade the RAM. The power supply is integrated as well. All Mac mini systems ship without a display, keyboard, or mouse, but numerous Apple and third-party options are available.