Silver SuperDrive external DVD-writer is suitable for MacBook Pro with retina display, MacBook Air, iMac (late 2012) & later and Mac mini (late 2009) Interface: USB 2.0, Maximum read speed: 24x CD, 8x DVD, Maximum rewrite speed: 24x CD, 8x DVD, Maximum write speed: 24x CD, 8x DVD Dimensions: 0.67H x 5.47W x 5.47D