BenQ CD 56xspd IDE int Bulk, 0.125 MB, 56x, 90 ms, 1 kg, 148 x 42 x 198 mm, 33.3MB / sec (Ultra DMA mode) BenQ CD 56xspd IDE int Bulk. Drive device, buffer size: 0.125 MB. CD read speed: 56x. Access time: 90 ms. Weight: 1 kg. Dimensions (WxDxH): 148 x 42 x 198 mm, Drive devices burst data transfer rate (Ultra DMA): 33.3MB / sec (Ultra DMA mode)