The Enter key on a laptop sits on the right edge of the main keys; on Macs it’s “Return,” and ISO layouts use a tall L-shape.

On most Acer laptops, the battery sits inside the base under the bottom cover; some older models use a clip-out pack on the underside.

On most HP notebooks, the internal battery sits under the bottom cover, centered with screws and a cable to the system board.

On most Lenovo laptops the battery sits under the base cover; older models use a removable pack on the underside with slide latches.

On most Inspiron models, the main battery sits under the bottom cover; some older units have a latch-out pack on the underside.

On Lenovo laptops, the Enter key sits at the right edge of the main keys; many models also include a second Enter on the numeric keypad.

On most Dell laptops, there’s no separate F-Lock; press Fn+Esc to toggle Fn Lock, or change Function Key Behavior in BIOS.

On most Lenovo all-in-one desktops, the power button sits on the lower-right edge or back-right corner of the display frame.

On most Acer Aspire laptops, the power button is top-right above the keyboard; some models place it on a right-side edge near the hinge.

On HP all-in-one desktops, the power button sits on the back lower-right edge or under the front chin, marked with the ⏻ symbol.