The Panasonic SW-9585-C is a versatile internal IDE/ATAPI DVD±RW drive, supporting DVD-RAM, DVD±R (Double Layer at 4x), DVD±RW, and CD-R/RW formats, boasting speeds like 16x DVD writing, 40x CD writing, and a 2MB buffer, primarily used in older desktop PCs for data backup and media burning. 

Use Cases: Popular for voice logging, medical data, and general backup where reliable DVD/CD burning is needed.

Key Specifications:

• Interface: IDE/ATAPI (PATA)

• DVD Write Speeds:

• DVD±R: Up to 16x

• DVD+R DL (Double Layer): Up to 4x

• DVD±RW: Up to 8x (DVD+RW), 6x (DVD-RW)

• DVD-RAM: Up to 5x

• CD Write Speeds:

• CD-R: Up to 40x

• CD-RW: Up to 24x

• Read Speeds: Up to 16x (DVD), 40x (CD)

• Buffer Size: 2 MB

• Media Support: DVD-RAM, DVD±R, DVD±RW, CD-R, CD-RW

• Type: Internal, for desktop PCs (Tower/Desktop) 

Features:

• Super Multi Technology: Writes to various DVD formats.

• Double Layer Support: Writes to DVD+R DL discs for more storage.

• IDE Interface: Connects via older PATA/IDE cables, common in older computers. 

Use Case:

This drive was a popular choice for desktop computer users needing a reliable internal optical drive for burning data, music, and video to CDs and DVDs, including double-layer DVDs, before the widespread adoption of Blu-ray and USB drives.