Vintage Original IBM 2-Button PS/2 Trackball Computer Mouse 1057313

Microsoft Trackball Optical Mouse 1.0 PS2/USB tested working

Microsoft Trackball Explorer 1.0 Mouse PS2/USB Compatible Tested

Vintage Kensington Orbit Trackball Mouse For IBM-Compatible Serial/PS2 Trackball

Vintage IBM 2-Button Trackball PS/2 Personal Computer PC Mouse 6450350

Vintage IBM 6450350 2-Button Wired PS/2 Computer Ball Mouse Beige MPN: 90X6778

Vintage IBM 2-Button Trackball PS/2 Personal Computer PC Mouse 6450350

Microsoft Trackball Explorer 1.0 Mouse PS2/USB Compatible X05-87473 Tested Works