Toshiba 336431-833 / HP SD-R2512 / Compaq274420-001 IDE Slim Combo Drive 8X DVD 24X CD-RW 10X CD-R 24X CD-ROM Tested

Item: Toshiba 336431-833 / HP SD‑R2512 Slim IDE Combo DriveCondition: Pre-owned, fully tested, and confirmed working

Upgrade or restore your laptop with this reliable Toshiba / HP SD‑R2512 Slim IDE Combo Drive. This unit supports DVD-ROM playback and CD-R/CD-RW reading and writing, making it a versatile replacement for older notebooks that require an IDE (ATAPI) optical drive.

Key Features

• Model: Toshiba 336431‑833 / HP SD‑R2512

• Interface: IDE / ATAPI (Slimline)

• DVD Read Speed: 8X

• CD-R Write Speed: 24X

• CD-RW Write Speed: 10X

• CD-ROM Read Speed: 24X

• Form Factor: Slim internal laptop optical drive

• Compatibility: Works with many older HP, Toshiba, Dell, and custom laptops using IDE slim drives (check your system for compatibility)

Condition Details

• Fully tested and verified functional

• Cleaned and ready for installation

• Normal signs of previous use (no impact on performance)

What’s Included

• Toshiba / HP SD‑R2512 IDE Slim Combo Drive only

Why Buy This Drive

Perfect for restoring vintage laptops, reading archived discs, installing legacy software, or replacing a failed IDE optical drive. These drives are becoming harder to find in tested working condition.

1. General Information

• Manufacturer: Toshiba (OEM for HP)

• HP Part Number: 336431‑833

• Toshiba Model Numbers: SD‑R2512 / SDR2512

• Drive Type: Slimline DVD‑ROM / CD‑RW Combo Drive

• Intended Use: Internal laptop optical drive (12.7 mm slim form factor)

• Interface: IDE / ATAPI (Slimline 50‑pin connector)

2. Optical Media SupportDVD Support

• DVD‑ROM Read: 8X

• DVD‑R / DVD‑RW: Read‑only

• DVD Writing: Not supported (this is a DVD‑ROM reader)

CD Support

• CD‑ROM Read: 24X

• CD‑R Write: 24X

• CD‑RW Write: 10X

• CD Access: Reads CD‑R, CD‑RW, CD‑ROM, multisession discs

3. Performance Specifications

• Average Access Time:

  • DVD: ~120 ms

  • CD: ~110 ms

• Buffer Size: 2 MB

• Data Transfer Mode: PIO Mode 4 / Multi‑Word DMA Mode 2 / Ultra DMA Mode 2

• Loading Mechanism: Motorized tray load

• Mounting Orientation: Horizontal or vertical

4. Physical Specifications

• Form Factor: Slimline 12.7 mm

• Width: 128 mm

• Height: 12.7 mm

• Depth: 127 mm

• Weight: Approx. 170–190 g

• Front Bezel: Varies (HP black, Toshiba silver, or OEM blank depending on batch)

5. Electrical Specifications

• Power Requirements:

  • +5V DC input

  • Typical operating power: 5–6 W

  • Idle power: ~1 W

• Connector: Slimline 50‑pin IDE/ATAPI

6. Compatibility

• Designed for laptops using 12.7 mm Slim IDE optical drives

• Commonly used in:

  • HP/Compaq business notebooks

  • Toshiba Satellite / Tecra series

  • Dell and IBM legacy systems

  • Custom retro builds requiring IDE optical support

• Note: Some systems may require bezel or mounting bracket transfer

7. Environmental Specifications

• Operating Temperature: 5°C to 50°C

• Storage Temperature: –20°C to 60°C

• Operating Humidity: 10%–80% (non‑condensing)

8. Reliability

• MTBF: ~100,000 hours (typical for this class of drive)

• Error Correction:

  • CIRC for CD

  • ECC for DVD

• Supported Disc / DVD‑RW (read CD

• Video CD

• Photo TableCategorySpecificationModelToshiba SD‑R2512 / HP 336431‑833Drive TypeSlim DVD‑ROM / CD‑RW ComboInterfaceIDE / ATAPI SlimlineDVD Read8XCD‑ROM Read24XCD‑R Write24XCD‑RW Write10XBuffer2 MBAccess Time110–120 msPower+5V DCDimensions128 × 12.7 × 127 mmWeight~180 gForm Factor12.7 mm Slimline