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The IBM WD400BB 40GB HDD is a 3.5-inch internal hard disk drive with a 40 GB storage capacity and an IDE/PATA interface. Originally manufactured for IBM systems (often built by Western Digital), this drive is ideal for legacy desktops, servers, or retro computing projects where IDE storage is required. It offers reliable spinning-disk performance for basic storage, backups, and operating system installation on older hardware.  
 
C9F2 Non Data Device