Sony had just revealed DRX-S90U, which is a super slim portable DVD/CD combo drive that has the capability to write DVD-RW at 8x speeds and CD-RW at 24x speeds which is great for an ultra portable USB powered optical drive. The new Sony portable writer has and access time of 150 ms and 180 ms for CD and DVD respectively. Remember that it is a dual USB powered optical drive which means you will need two free USB ports to power it. It measures 5.37 x 0.75 x 5.98 inches and only weighs about 0.71 lbs. The new Sony portable DVD/CD drive will mostly be used by netbook owners as well as notebook users looking for a replacement. According to Sony, the super slim DRX-S90U DVD/CD optical drive will be available this month for a price of $70 only.