ASUS External slim combo cd-rw vs ASUS External slim dvd+/-rw usb/fw

Comparison of External slim combo cd-rw, External slim dvd+/-rw usb/fw

20 specifications	A ASUS External slim combo cd-rwView product	B ASUS External slim dvd+/-rw usb/fwView product
Designidentical
Internal	No	No
Performanceidentical
Drive device, buffer sizeKnown for one	2 MB	—Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	60000 h	—Unknown — not stated by the source
Writing speed1 differ
CD write speed	24x	24x
CD rewrite speedDiffers	12x	24x
Reading speedidentical
CD read speed	24x	24x
DVD read speed	8x	8x
Access timeidentical
Access timeKnown for one	100 ms	—Unknown — not stated by the source
Operational conditionsidentical
Operating relative humidity (H-H)Known for one	8 - 80%	—Unknown — not stated by the source
Operating temperature (T-T)Known for one	5 - 45 °C	—Unknown — not stated by the source
Weight & dimensionsidentical
WeightKnown for one	250 g	—Unknown — not stated by the source
Other features1 differ
Power requirementsKnown for one	100 ~ 240V (50 ~ 60Hz)	—Unknown — not stated by the source
Media types supportedKnown for one	DVD: DVD-ROM, DVD-R/RW, DVD-Video, DVD+R/RW; CD: CD-Audio, CD-ROM, CD-ROM/XA, CD-I, Mixed Mode CD-ROM, Photo CD, CD-Extra, Video CD, CD-Text, DVCD, Bootable CD	—Unknown — not stated by the source
Dimensions (WxDxH)Known for one	139 x 142 x 16 mm	—Unknown — not stated by the source
Compatible operating systemsDiffers	Microsoft Windows XP/ ME/ 2000/ 98SE, and Mac OS X	Microsoft Windows XP/ NT/ ME/ 2000/ 98/ 98SE
Write methodsKnown for one	—Unknown — not stated by the source	TAO, DAO, SAO, Packet Write
DVD+R speedKnown for one	—Unknown — not stated by the source	8x
DVD+RW speedKnown for one	—Unknown — not stated by the source	4x
DVD-R speedKnown for one	—Unknown — not stated by the source	8x
DVD-RW speedKnown for one	—Unknown — not stated by the source	4x

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.