Lenovo 4XB0H30210 240GB ThinkPad M.2 SATA SSD

The Lenovo 4XB0H30210 is a 240GB M.2 SATA solid state drive specifically validated for the ThinkPad X1 Carbon ultrabook line. Using the standard M.2 2280 form factor (22mm wide, 80mm long), it slots directly into the laptop's internal M.2 bay without adapters or modifications. The SATA 6.0 Gbps interface provides maximum theoretical throughput of around 550 MB/s, delivering noticeably faster boot times, application launches, and file transfers compared to a traditional spinning hard drive.

A key feature of this drive is its OPAL compliance, meaning it supports the Trusted Computing Group's self-encrypting drive standard. This allows IT departments to enable full-disk hardware encryption through BIOS settings or endpoint management tools without the performance overhead that software-based encryption can introduce. For enterprise ThinkPad deployments, using a Lenovo-validated part number like this one avoids potential BIOS whitelist rejections that can occur with third-party drives. The trade-off is that 240GB is a relatively modest capacity in an era of increasingly large OS installations and application footprints, and the SATA interface leaves performance on the table compared to NVMe alternatives.