Freecom FX-1 CDRW 40X12X40X, USB 2.0, 2 MB, 40x, 12x, 40x, 120 ms Freecom FX-1 CDRW 40X12X40X. Interface: USB 2.0, Drive device, buffer size: 2 MB. CD write speed: 40x, CD rewrite speed: 12x. CD read speed: 40x. Access time: 120 ms. Dimensions (WxDxH): 6.73 x 10.2 x 2.95" (171 x 258 x 75 mm)