Epson EQUITY 386SX/16 PLUS - Manual (Page 154)

4. Use one of your hands to hold up the subassembly or
have someone do it for you. With your other hand, grasp
the hard disk drive ribbon cable that you tucked beneath
the subassembly. Pull the cable under the subassembly all
the way to its left side.
5. Carefully lower the front of the subassembly onto the
computer, as shown below.
small tabs
B - 2 0
Installing and Removing Disk Drives