BenQ CD 652A, 0.125 MB, 33.3 MB/s, OS: Windows 95/98/ME/NT 4.0/2000/XP, 56x, 90 ms, 2.43 lbs (1.1 kg) BenQ CD 652A. Drive device, buffer size: 0.125 MB, Burst transfer rate: 33.3 MB/s, Compatible products: OS: Windows 95/98/ME/NT 4.0/2000/XP. CD read speed: 56x. Access time: 90 ms. Weight: 2.43 lbs (1.1 kg). Dimensions (WxDxH): 5.83 x 7.8 x 1.65" (148 x 198 x 42 mm), Sustained data rate: 7.8 MB/s