Mid 2010 iMac with 21.5-inch display, Intel Core i3, and Radeon HD 5670 graphics. - Model: iMac (21.5-inch, Mid 2010) - iMac OS High Sierra - Processor: 3.2 GHz Intel Core i3 - Memory: Upgraded from 4GB to 8GB 1333 MHz DDR3 - Graphics: ATI Radeon HD 5670 512 MB - Display Size: 21.5-inch (1920 x 1080) - Optical Drive: OK --mac OS High Sierra installation USB included Bootable installer If you ever need it, having the OS... For those who find it troublesome or difficult to create one: [Main Uses] ・New installation ・Upgrade ・Initialization ・Emergency recovery, etc. - Included: Power cord, original box USB offline installer (16GB) [Other] ・We do not guarantee against installation failures, data loss, etc. ・When using, please connect directly to the main unit without using a HUB, etc. ・The USB memory is new, but has been opened to create the installer. ・Due to its large size and weight, returns and cancellations are not possible. Thank you for viewing.