DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.542BLU-RAY WRITER MT DT SFF USFFExternal Dimensionsinches/centimeters(Without Bezel – W x H xD)148.2mm(6in)/42mm(2in)/ 190.5 (max)148.2mm(6in)/42mm(2in)/ 190.5 (max)128.0 mm (5.04in)/12.7mm (0.5 in)/ 126.1mm(4.97in)128.0 mm (5.04in)/12.7mm (0.5 in)/ 126.1mm(4.97in)Weight (max) pounds/kilograms 750g 750g 165g 165gInterface type and speed SATA 1.5Gbit/s SATA 1.5Gbit/s SATA 1.5Gbit/s SATA 1.5Gbit/sDisc Capacity Standard Standard Standard StandardInternal buffer size supplier dependent supplier dependent supplier dependent supplier dependentAccess Times (typical) supplier dependent supplier dependent supplier dependent supplier dependentMaximum Data Transfer RatesWrites 6X BD/16x DVD/40x CD 6x BD/16x DVD/40x CD 6X BD/8x DVD/24x CD 6X BD/8x DVD/24x CDReads 8X BD/16x DVD/40x CD 8x BD/16x DVD/40x CD 6X BD/8x DVD/ 24x CD 6X BD/8x DVD/ 24x CDPower SourceDC Power Requirements 12V, 5V 12V, 5V 5V 5VDC Current 1200mA (12V)/ 900mA(5V)1200mA (12V)/ 900mA(5V) 900mA 900mAEnvironmental Operating Conditions (Non-Condensing):Operating TemperatureRange 5C to 50C 5C to 50C 5C to 50C 5C to 50CRelative Humidity Range 20% to 80% RH 20% to 80% RH 20% to 80% RH 20% to 80% RHMaximum Wet Bulb Tem-perature 29C 29C 29C 29CAltitude Range -200 to 3048m -200 to 3048m -200 to 3048m -200 to 3048mOperating TemperatureRange -40C to 65C -40C to 65C -40C to 65C -40C to 65CRelative Humidity Range 5% to 95% RH 5% to 95% RH 5% to 95% RH 5% to 95% RHMaximum Wet Bulb Tem-perature 38C 38C 38C 38CAltitude Range -200 to 10600m -200 to 10600m -200 to 10600m -200 to 10600mEnvironmental Non-Operating Conditions (Non-Condensing):OPTIC AL DR IVES (CONT .)