On many Gateway notebooks, the wireless switch is a small slider on the front edge; newer models use a Fn key or Windows Wi-Fi toggle.

The CMOS battery on many Sony Vaio models sits under the bottom cover as a small coin cell wired to the motherboard.

On most Dell Inspiron laptops, the storage sits under the bottom cover; remove the base to reach the M.2 slot or 2.5-inch bay.

The wireless card in most Dell laptops sits under the base cover near the battery, labeled WLAN/M.2 with two antenna leads.

In a tower PC, the graphics card sits in the long PCIe x16 slot on the motherboard, with its ports facing the rear expansion slots.

The wireless card on a laptop sits on the motherboard, usually under the bottom cover near the battery or hinge area.

Yes—the graphics card sits in a long PCIe x16 slot near the rear of the case, so its ports line up with the back panel.

On most Toshiba laptops, the CMOS battery sits under the bottom cover or a small access panel; some models place it beneath the keyboard.

On HP laptops, the Wi-Fi adapter appears in Device Manager and the physical card sits inside the chassis, usually under the bottom cover.

In HP tower PCs, the video card sits in the PCIe x16 slot near the rear I/O, with its display ports exposed at the back bracket.