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Home > Hardware Reviews > Optical Storage

Wednesday, March 26, 2008

1. Introduction, features

Lite-On released last February its second generation of DVD burners featuring the EZ-DUB function, a patented new feature that makes copying easier and more hassle-free for users than ever before. Two buttons are placed on the top side of the external drive, allowing easy disc copy or creation of DVD data compilations without needing to have any third-party burning software installed on your PC.

With its high writing speeds, the new DH20A4P comes to claim the top position among the external DVD-ReWriters. Its reading speeds are also set high enough, complementing its good specification list. Let's take a look at the key features:

- Key Features

  • High speed 20X DVD±R media burning.
  • EZ-DUB a patented innovation for easy copying and backing-up.
  • Easy software included.
  • Supports DVD+/-R Double Layer and DVD-RAM writing.
  • Smart-Write - Self-learning technology ensuring best writing quality with all media.  
  • SMART-BURN for efficient recording minimizes buffer under conditions.
  • SMART-X for fastest CD-DA/VCD/DVD data extraction speed.
  • Flash ROM supports on-line programming capability.
  • Power saving mode.

- Specifications

DVD Family
DVD+R 20X maximum by CAV
DVD-R 20X maximum by CAV
DVD+R9 8X maximum by Zone CLV
DVD-R9 8X maximum by Zone CLV
DVD-RAM 12X maximum by PCAV
Read 16X maximum by CAV
Access time 160ms

CD Family
CD-R 48X by CAV
CD-RW 32X maximum by Z-CLV in UltraSpeed disc
Read 48X(7200KB/sec) maximum by CAV
Access time 160ms
PC Required
Pentium 4 1.3GHz or higher CPU and 128MB or higher RAM are required.
HDD must have access time < 20ms; with a minimum of 650MB free
9GB free space for creating a DVD image file (9GB for double layer; 5GB for single layer).
Microsoft Windows 2000 / XP
MTBF (Life)
70000 POH
S/N Ration
> 60dB
Operating 5°C to 35°C; Relative Humidity: 15% to 80%
Non-Operating -40°C to 60°C; Relative Humidity: 15% to 95%
Dimension 165(W) x 58(H) x 192(D) mm
Weight 1.3Kg

- Retail package

The drive's retail package includes the following:

LiteOn DX-20A4PU EZ-DUB external drive

Quick installation and operation guide

CD kit for application software (EZ-DUB software, Nero 7 Essentials)

Hi-Speed USB 2.0 standard cable

AC/DC power adapter (100V to 240V)

The drive comes with a very stylish external case as you can see in the photos below:


On the rear panel, you can see the USB and power ports, as well as an On/OFF switch.

Once powered on, the two buttons placed on the top side of the drive light up. These are used for the EZ-DUB operation, as we will see later on.

Our test sample was manufactured on the November 2007 in China.

- Installation

The drive was connected as a USB device, and was recognized as "ATAPI DVD A DH20A4P".

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