Addonics AEPCDII24. CD read speed: 24 x. Interface: USB. CD-ROM drive average random access time: 85 ms. Dimensions (WxDxH): 143 x 135 x 22 mm, Weight: 0.36 kg. Operating temperature range (T-T): 5 - 45 °C, Operating relative humidity range: 8 - 80 %, Storage temperature range (T-T): -20 - 60 °C