What the label does not tell you

Seeing “8 GB” in Windows tells you the amount, not whether it is soldered, whether a slot is free, or which module type fits. DDR generations are not interchangeable. A module may physically resemble another but still be incompatible.

Information for a precise quote

Send the full laptop model, current memory amount, and a photo or screenshot of any service tag if available. We will check whether a module can be replaced or added and quote the part, starting $69 labor, and shipping. If the design is sealed or soldered, we will say so before you send the laptop.

We also ask what feels slow. If the real bottleneck is a mechanical drive, buying more RAM alone may disappoint. Compatibility and the problem being solved both matter.