Comparison : Item # 6812NA, Class I, Division 2 Non-Incendive PS/2 Model OEM Kit, 109-Key Elastomer FM Approved Keyboard
Item # 6912NA, Class I, Division 2 Non-Incendive PS/2 Model OEM Kit, 109-Key Membrane FM Approved Keyboard
Item # 6952NA, Class I, Division 2 Non-Incendive PS/2 Model OEM Kit, 109-Key Membrane FM Approved Keyboard with Trackball