The CONNER CFS1275A 3.5" IDE Hard Drive is a reliable and high-quality internal hard disk drive designed for use in computers and networking systems. With a form factor of 3.5 inches and an IDE interface, this drive is compatible with a wide range of systems and offers efficient data storage and retrieval. The Conner brand is known for its durable and dependable storage solutions, making this hard drive a dependable choice for both personal and professional use. Unit is tested and works fine, but has had 208K bad sectors for many years. I just ran a thorough scan and it's still only 208k.