On most Acer laptops, press Fn + the key with the antenna icon (often F3); some older units have a small side or front switch.

On most Acer laptops, the wireless switch is Fn+F3 or a small slider on the front or left edge.

The Dell laptop Wi-Fi switch is often a side slider on older Latitude models; newer systems use Fn+F2 or software to toggle wireless.

On HP Pavilion laptops, the wireless control is usually the F12 key with a radio icon; some older units use a side switch or Windows toggles.

On most HP notebooks, the wireless control is the F12 key with a radio or airplane icon; older models use a small side or front switch.

On Dell Inspiron laptops, the wireless switch is usually a keyboard shortcut (Fn+F2 or the Wi-Fi icon button) or the Windows Quick Settings toggle.

Yes, desktop memory slots sit on the motherboard next to the CPU socket, beside the cooler and 24-pin power area.

On most laptops, the hard drive or SSD sits under the bottom cover—either a 2.5-inch bay near an edge or an M.2 slot on the motherboard.

On most Dell notebooks, RAM sits under the bottom cover; some older models add slots under the keyboard, and XPS 13 uses board-soldered memory.

On Dell laptops, the Wi-Fi adapter shows in Device Manager under Network adapters; some models also use an Fn key or BIOS wireless control.