I just purchased a Gateway Colorbook (for context of era this has a 486dx processor) to use as a DOS gaming machine, and accepted that it's hard drive was not included under the assumption that it would use a standard 2.5 in. IDE interface. However, when I received it, I was surprised to find the interface seen in the attached picture. Note how the connector doesn't span the width of the drive back. Does anyone more familiar with vintage components recognize it?