External, Slim Portable 8X Double Layer DVD +/-RW & CD-RW Combo Drive, with USB cable battery kit.
Hi-speed USB2.0 Combination Drive.
Small size, light weight, easy to carry around.
Dimensions: 5.5" x 6.02" x 0.78"
Light weight: Dirve is only about 1.1 lb, with the optional USB cable battery, the whole unit is only about 1.5 lb. 
Most potable external optical drives are not really portable because they need external AC power (USB or firewire ports normally can not supply enough power to run optical drives)
This portable slim external DVD +/- RW & CD-RW combo drive can be really portable with the USB cable battery: It is powered from computer USB port & the Li-Ion Battery that built in the middle of USB cable. With the rechargeable Lithium-Ion battery on USB cable, the Slim DVD +/-RW & CD-RW drive works without an AC adapter via the USB port connection. Just connect the special USB cable with battery to your PC's USB port, and the unit will start to work. With advanced power management technology, the Slim DVD +/- RW & CD-RW Drive uses limited power from USB bus power. Any shortage of power will be supplied by the battery. While the Slim DVD +/- RW & CD-RW is idle, the battery will be recharged via USB bus power.
With high-performance USB 2.0 interface, the Slim DVD +/- RW & CD-RW allows data accessing or burning CDs at 480Mbps speed. Once the drive is connected to a computer, a proper protocol/drivers will automatically load and provide instant access.
Write Speed: (Zone-CLV)
DVD+R: 8X (10.8MB/sec)
DVD+R Double: 6X (8.1MB/sec)
DVD+RW: 8X (10.8MB/sec)
DVD-R: 8X (10.8MB/sec)
DVD-R Double: 4X (5.4MB/sec)
DVD-RW: 6X (8.1MB/sec)
DVD-RAM: 5X (6.75MB/sec)
CD-R: 24X (3.6MB/sec)
CD-RW: 24X (3.6MB/sec)
Read Speed:
DVD+R: 8X (10.8MB/sec)
DVD+R Double: 6X (8.1MB/sec)
DVD+RW: 8X (10.8MB/sec)
DVD-R: 8X (10.8MB/sec)
DVD-R Double: 6X (8.1MB/sec)
DVD-RW: 6X (8.1MB/sec)
DVD-RAM: 5X (6.75MB/sec)
DVD-ROM: 8X (10.8MB/sec)
CD-ROM: 24X (3.6MB/sec)
CD-R: 24X (3.6MB/sec)
CD-RW: 24X (3.6MB/sec)
Burst Transfer Rate: PIO Mode 4 (16.6MB/sec); Ultra DMA Mode 2 (33.3MB/sec)
Format Support: DVD-RAM, DVD+R, DVD+R DL, DVD+RW, DVD-R, DVD-R DL, DVD-RW, Light Scribe DVD±R, Light Scribe CD-R, DVD-ROM, DVD-Video, CD-R, CD-RW, CD-ROM, CD-ROM/XA, CD-Audio, Video-CD, Photo CD, CD-I(FMV), CD-Extra, CD-TEXT
Buffer Memory: 2 MB
Average Seek Time: DVD - 130ms; CD - 130ms
Writing Methods:
DVD:Random Access Writing (DVD+-RW), Sequential Writing 9DVD+-R/DVD=-RW)
CD: DAO (disc at once), SAO (session at once), TAO (track at once) with zero gap, variable or fixed packet, multisession
Compatibility: MPC Level 3, MultiRead, PC2001
Supports Windows98SE, ME, 2K, XP, Linux, FreeBDS, MAC 8.6 or higher
Transfer data up to 480 Mbps with USB2.0
Hot-swap, hot plug capability; daisy chain-able without ID or termination
Built-in Stereo Audio Ports
Cab be powered from optional rechargeable Lithium-Ion Battery, Operating without AC Adapter
Support both USB2.0 & USB1.1 port
With this slim combination drive, mobile PC users can now create DVD videos and CD audio files all with the same drive, allowing users to burn and edit both work-related and personal digital productions on the fly and on the go.
The lightweight combination drive brings DVD recording to the mobile world and gives users a stepping stone to move from CD to DVD technology for creating and storing family photos, files, videos and other memories they don't want to lose. Based on the DVD +/- R & RW format, combination drives support the most widely compatible DVD standard, giving consumers the highest level of compatibility with legacy DVD devices. This slim-drive supports writing DVD-R/RW.
This powerful storage device is a functional technology that enables PC manufacturers to deliver unprecedented DVD and CD computing capabilities in their mobile devices. Until now, only desktop computers have had the luxury of DVD recordability for applications such as audio/video editing and personal digital compilations.
* Buffer Under Run Proof technology prevents buffer underrun errors and allows you to multi-task during a recording session. * Black CD tray minimizes jitter and reduces C1 error rates. Optimized PCB circuits near the power source decrease noise and provide clean power to the drive, improving both jitter and deviation levels. * Hi-Speed USB interface and Plug & Play compatibility make installing the drive a snap. You will be up and running in minutes. Drag and Drop simplicity lets you quickly and easily copy and share files or reclaim valuable hard disk space.

INTERFACE
- USB 2.0: 480Mb/s (max.)
USB 1.1: 12MB/sec (max.)
FRONT PANEL - Eject : Eject Button/Manual Emergency/Software Control Lights : One LED to indicate Power on/Disc Access/Writing Disc Loading : Manual load/manual eject/auto eject Headphone Jack: Stereo mini-jack, 0.8 V at 32 ohms Volume Control: Wheel Knob
REAR PANEL -
Power Connector : Connect the external AC adapter (Optional, since this drive has a built-in battery, AC adapter is not required
Interface Connector: Connect the bundled USB cable
USB 2.0 interface required to achieve 24x write, 10x rewrite and 24x read speeds*.
USB 2.0 required for DVD playing & DVD recording
* USB 1.1 interface performance is limited to 4X write, 4X rewrite and 6X read speeds.
Hardware supports Windows Win98SE, ME, 2K, XP; Linux, FreeBDS, MAC 9.04 or higher(DVD play and CD Recording software supports Windows only). Dimensions: 5.5" x 6.02" x 0.78"
Operating Temperature: 00o C to 50o C
Operating Humidity: 5% to 95% non-condensing
Connectors: 4-pin USB connector x 1
Power connector x 1
Stereo Audio connector (Head phone) x 1
System Requirements:- Pentium II 300MHz or equivalent, 64MB RAM, 800MB to 1GB free hard drive space.
Note: DVD playing and recording require USB2.0 port. If your laptop/notebook computers only
have USB1.1 ports, you can use our USB2.0
PCMCIA card to add USB2.0 ports through PCMCIA slot.
Power Options:
A 5V AC/DC power Adapter is included for powering the unit from a AC outlet on the wall. When AC power source is not available, the external drive can operate without a AC Adapter with the USB Cable Li-Ion Battery included. The USB cable battery has a li-ion rechargeable battery built in the middle of the USB cable which connect the external drive to the computer USB port.

Package Contents:
a Slim USB2.0 External DVD+/-RW & CD-RW Combo drive,
a USB cable
a 5V AC/DC Power adapter
a USB cable battery
software for playing/recording DVD and recording CD-R/CD-RW disc.
Warranty: 1 Year limited warranty