 Hello, this is Nick from Laptop Media, and today we will show you how to open the Dell Latitude 145440. To gain access to the internals you have to undo 8 captive Phillips head screws. After that, raise the bottom plate close to one of the hinges to open a gap. You can begin prying the panel with a thin plastic tool, starting from the sides, and then the front, the back should be last. Please remember, it would be of great help to us if you just hit the like button and subscribe to our channel. That would motivate us to make even more and better videos for you. Our device has the optional 54 watt hour battery, the base version is a 42 watt hour variant. Before removing it, unplug the connector from the main board, and undo the 5 Phillips head screws that keep the unit in place. The optional capacity is enough for 14 hours and 17 minutes of web browsing, or 8 hours and 20 minutes of video playback. The result is definitely good. To achieve that, you have to apply the balanced preset in the Windows power and battery menu, and select the optimized power plan in the BIOS. You get two SODIMS for future upgrades. This notebook has two versions, with DDR4 or DDR5 memory. Depending on the RAM version, the maximum possible amount could be 64GB of DDR4, 3200MHz DDR5, 4800MHz or DDR5, 5200MHz memory in dual channel mode. The laptop in front of us has DDR4 slots. The WAN slot for optional 4G or 5G connectivity is placed next to the cooling. On the right side of the battery, you can see the single M.2 slot, compatible with 2230 Gen4 SSDs. The NVMe is covered by a metal shroud that has a small thermal pad on the inside. The thermal system comprises one decently sized fan, a heat sink, one heat pipe, and a heat spreader.