HP Pavilion dv4000 Series DVD Writer & CD Writer, DVD & CD Recordable Drive. DVD +/-R, DVD +/-RW, CD-R/CD-RW Combination Drive, 8X Double Layer.
This drive is compatible with HP Part #: 396704-001, 391743-001, 383940-001, 396706-001.
With this slim combination drive, HP DV4000 Series laptop 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.
Features:
Supports for DVD+R/+RW, DVD-R/-RW, disc read & write
DVD+R Double Layer 2.4X
Defect management for reliable data writing
Buffer Under Run Free Technology
Specifications:
Data Transfer Rate Read CD: 3.6 MB/sec (24x)
Data Transfer Rate Read DVD: 10.8 MB/sec (8x)
Data Transfer Rate Write on CD Record: 3.6 MB/sec (24x)
Data Transfer Rate Write on CD Rewritable: 3.6 MB/sec (24x)
Data Transfer Rate Write on DVD-R: 10.8 MB/sec (8x)
Data Transfer Rate Write on DVD+R: 10.8 MB/sec (8x)
Data Transfer Rate Write on DVD-RW: 5.4 MB/sec (4x)
Data Transfer Rate Write on DVD+RW: 5.4 MB/sec (4x)
Double Layer: 2.4x write, 8x read
Data Transfer Rate Write on DVD-RAM: 5x write
Burst Transfer Rate PIO Mode 4: (16.6 MB/sec)
Burst Transfer Rate DMA Mode 2: (16.6 MB/sec)
Burst Transfer Rate Ultra DMA Mode 2: (33.3 MB/sec)
Recording Capacity CD-RW Disc: 700/650MB (Type 80/74)
Recording Capacity CD-R Disc: 800/700/650MB (Type 90/80/74)
Average Seek Time DVD-ROM: 110ms
Average Seek Time CD-ROM: 110ms
Drive Type: Internal
Interface: EIDE / ATAPI
Dimensions (WxHxDmm): 128 x 12.7 x 127
Buffer Memory: 2MB
Drive Mounting: horizontal/vertical
Supported Disc: DVD+R, DVD+RW, DVD-R, DVD-RW, DVD-VIDEO, DVD-ROM, DVD-RAM, CD-R, CD-RW, CD-ROM, CD-ROM/XA, CD-Audio, Video-CD, Photo CD, CD-I(FMV), CD-Extra, CD-TEXT
Horizontal or Vertical Mount
External Dimensions (W x H x D):
128mm x 12.7mm x 129mm
Warranty: 1 Year limited warranty
Environmental:
Operation Temperature: 41°F - 122°F (5°C to 50°C)
Storage Temperature: 14°F - 140°F ( -10?to 60°C)
Operating Humidity (non-condensing) 8% to 80%
BUS Interface
IDE Interface Connector, 50 Pin I/F ATAPI Standard
Burst Transfer Rate: PIO Mode 4 / Ultra DMA 33
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
Note: This CD Drive has a 50-pin ATAPI IDE Interface Connector as the picture shows:

Installation Notes
This drive has no jumpers that need to be set
This drive does not require any unique device drivers for Windows '98/2000/XP/Vista//NT. After installing your drive and re-booting, your system should recognize your drive. Win '98/2000/XP/Vista/NT Operating Systems support all ATAPI drives natively.
Package including:
Internal Slim DVD +/-RW & CD-RW combo Drive
Software for Writing DVD +/-R, DVD +/-RW, CD-R, CD-RW

Note: The software bundled with the drive is Nero Express 7 Essentials version. To take full advantage of the DVD +/-RW drive features, you may need to get software upgraded from Nero. Software CD may look different from picture shown.
HP Pavilion dv4000 and Compaq Presario V4000 Series DVD Drive Installation Guide.
1. Shut down the computer. If you are unsure whether the
computer is off or in hibernation, turn the computer on,
and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power cord.
4. Remove the battery pack
5. Remove the hard drive
6. Remove the Phillips PM2.5×7.0 screw 1 that secures the
optical drive to the computer.
7. Insert a thin tool, such as a paper clip, into the media tray release hole 2. (The optical drive media tray releases from the optical drive.)
8. Use the media tray frame to slide the optical drive to the left 3.
9. Remove the optical drive.
Reverse the above procedure to install the optical drive.