My Terramaster suggestion was more aimed at Mike, looking to transfer things out of bit locker... he'd need to both mount the old drives, and new drive(s) to transfer data.

If you were aiming to move to NVMe, and not SATA SSDs, then there's also a D5 version, two bays + 3 NVMe. The bays can take 3.5" SATA HDD, 2.5" SATA HDD or 2.5" SATA SSD, so should work regardless of what drive you have, as long as it's SATA. Or you could opt for separate devices, since you won't need the drives after transferring data off them. OWC has a 4x NVMe box. Haven't fully decided on a route myself yet.