Plus Hardcard 20 ~ Hard Drive / ISA Slot For Sale

Plus Hardcard 20 ~ Hard Drive / ISA Slot
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Plus Hardcard 20 ~ Hard Drive / ISA Slot:
$22.00

Vintage Hardcard 20 Plus 20MBPersonal Computer ISA Hard Drive Card
This was an amazing breakthrough at the time.A hard drive with controller mounted to fit in a full length isa slot.This is a perfect upgrade for an early IBM PC / XT or compatible!

  • Make: Plus Development
  • Model: Hardcard 20 Plus
  • Interface: ISA
  • Copyright: 1986
  • Item Number: 8205 (serial?)
  • Condition:The physical appearance is very good. But, please examine the photos and make your own determination. Being sold untested / present working condition unknown. It may need restoration / repair.
This HD card was a working when added to my personal collection. However, due to the time in storage untested - I do not know the current working condition. Therefore, I am selling it \"as is\" for parts, display and/or historic value (working or not).General History of Plus Development (Wikipedia)
Quantum Corporation formed the Plus Development subsidiary in 1983. Plus Development invested their efforts in developing a hard disk drive that the average computer owner could install easily without much technical knowledge.
Quantum Corporation formed the Plus Development subsidiary in 1983. Plus Development invested their efforts in developing a hard disk drive that the average computer owner could install easily without much technical knowledge.
By 1985, Plus Development had engineered their first Hardcard; it had a 10 megabyte (MB) capacity; its suggested retail price was $1,095. In the mid-1980s, hard drives were as small as 1.6 inches tall, but in order to fit into a single ISA PC card expansion slot a custom one-inch thick hard drive had to be designed. Having spent $15 million on the project, Plus Development started shipping Hardcard in October 1985, and trademarked the Hardcard brand in 1988.
The Hardcard provided the computer industry with the first one-inch-thick HDD, but it was an interface and form factor only compatible with the full length card slot of the ISA bus first introduced with the IBM PC. As such it had a thicker head disk assembly[10] than the subsequently introduced 1-inch high standard form factor 3½-inch HDDs.
While sources inside the company during the launch of Hardcard claim it was the first HDD controller integrated into the drive printed circuit board, Xebec, a HDD controller manufacturer in the early 1980s, had already done that with their Owl product around August 1984. It was a complete 5.25 inch half-height HDD with an integrated controller and drive electronics on the same printed circuit board with a SASIinterface.SELLER INVENTORY # 323


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