Source: Windows Central Acer TravelMate Spin P4 The ThinkBook 14s Yoga and TravelMate Spin P4 are both 14-inch convertible laptops that have been certified for MIL-STD 810H durability, meaning they can withstand elements outside of what you might find in a regular office setting. Both should make for great travel or field partners. The 14s Yoga has a more compact footprint, but it weighs more due to the all-metal chassis. The Spin P4 uses a magnesium blend that helps shave off some weight. Ports are nearly the same, though the Spin P4 has an extra RJ45 Ethernet port if you're looking for a wired internet connection. Both laptops feature Thunderbolt 4, and the 14s Yoga has an extra USB-C port that doubles for charging.