Hope OWC sends you even more of their products to review, as despite having great products they’ve seemed to be a little more under people’s radars.

If more speed is essential to your work, the Express 4M2 delivers it in a small, well-built, dependable box. Experience breathtaking performance, multi-enclosure capability, advanced drive monitoring, e-notifications and downloadable updates. DITRA-HEAT combines the benefits of Schluter DITRA decoupling matting with easy to install electric underfloor heating cables for a system that will save you time and money when installing over problematic substrates.High-Speed Thunderbolt Connectivity: The Express 4M2 harnesses the power of Thunderbolt 3, providing incredibly fast data transfer speeds. Yes, you can use any two NVMe SSDs as a RAID 0, attached to different Thunderbolt ports and far exceed the speed of Thunderbolt 3/4. The 150W/m2 system is suitable for use as a primary heat source in these well insulated applications. I only got this as a stopgap for a few years until I get a more serious machine that can handle PCIe slots again. Performance numbers will vary greatly depending on your configuration and drive choice, of course, but this gives you an idea of what to expect.

If you want the fastest speed with maximum storage capacity, format the unit as RAID 0 using Apple Disk Utility.Comfort Zone underfloor heating mats are available in a range of sizes to suit most rooms, and can be used to heat your room or to simply take the chill off your newly tiled floor. Install the SSDs, plug the unit into wall power using a small power brick, connect it to a Thunderbolt port and you are ready to format it.

OWC ClingOn custom cable stabilizers (available separately) screw into the OWC Dock or OWC Drive housing to reduce – if not completely eliminate – cable strain on Thunderbolt and USB-C connections so you can work with ultimate confidence even in the highest foot traffic environments. With the ability to run up to six devices per port, Thunderbolt ports amplify your laptop or desktop with peripheral power.

If you need speed combined with greater storage than one SSD provides, the Express 4M2 is an excellent choice. It has two Thunderbolt ports on the back so you can loop through this device to connect other Thunderbolt devices (up to six). Schlüter-DITRA-HEAT is the perfect choice for renovation projects, thanks to it’s suitability for problematic substrates and low 5. I understand the constraints on space, but I think if OWC ever does a version 2, an internal power supply would be a nice option, though the external brick does provide flexibility if you run the rest of your equipment off 12V DC; there are considerations for both options.