Icy Dock’s latest gadget, the ToughArmor MB840M2P-B, is a great way to add an M.2 slot to an older system. If your SSD supports, it also allows you to pop the M.2 SSD out while your system is still running. This card converts four PCIe 3.0 lanes into an NVMe M.2 SSD bay and appears quite simple, but it has more features under the surface than one would think. It equipped it with a hot-swap design that allows you to pull out the M.2 drive built in the cage with a tool-less installation mechanism. The chassis is made of aluminum and comes with a thermal pad for cooling your M.2 drive. PCIe 3.0 x4 M.2 NVMe SSDs can easily push up to 3.5 Gbps in reading and write speeds nowadays, with entry-level M.2 drives pushing around 2 GBps at friendlier price points. Meanwhile, their SATA counterparts typically cap out at around 500 MBps throughput. This makes an upgrade to M.2 very interesting, especially if you just want that fast speed. To ensure compatibility with as many systems as possible, the ToughArmor MB840M2P-B comes with full-height and low-profile PCIe expansion slot covers, and the card slots into PCIe x4, x8 and x16 slots as needed. The ToughArmor MB840M2P-B supports all M.2 SSD lengths between 30mm and 110mm.