Apple MacBook Pro Retina 13" Early 2015 i5 2.7GHz 8GB RAM 250.79GB SSD (Solid State Drive) This is a specific model of the MacBook Pro released in early 2015. It comes with an Intel Core i5 processor running at 2.7GHz, 8GB of RAM for smooth multitasking, and a If you want to upgrade your MacBook Pro, you can add an M.2 SSD. This will enhance the storage speed and overall performance of your laptop. Please note that the MacBook Pro Retina 13" Early 2015 model does not come with an M.2 slot by default, so you would need to check if there are specific adapters or modifications available to accommodate an M.2 SSD. Adding an M.2 SSD can significantly improve the read and write speeds of your storage, making your MacBook Pro more responsive and efficient.Macbook does not have a SSD in itThe MacBook Pro's battery is not functioning properly. When unplugged, it likely doesn't hold a charge or lasts for a very short time. However, when plugged into a power source, it works fine, indicating the issue is specifically with the battery. This MacBook Pro is likely the UK version, meaning it was designed for and sold in the United Kingdom. This may affect the type of power adapter it uses (with UK-specific plugs) but doesn't have a significant impact on its functionality otherwise.Apart from the bad battery, the MacBook Pro has another issue: there is a 1-inch section of the screen that is broken. Although the screen is damaged, it's still usable, albeit with a portion of the display compromised. To restore the MacBook Pro to optimal functionality, you would need to replace the battery. Once the battery is replaced, the MacBook should work perfectly fine when not connected to a power source. Additionally, while the screen is damaged, it is still usable, although not in its original perfect condition. If you prefer a fully intact display, you might consider getting the screen repaired as well.In summary, the MacBook Pro functions well when plugged in, but the battery needs replacement for it to work without a power source. Additionally, there's a broken portion of the screen (1 inch) that affects its visual display, though the laptop remains usable.