SanDisk designed its X-Series products primarily for business notebook upgrades. SanDisk has an aggressive strategy and retail partners in place to aid businesses making the transition from disk to flash. Like the X300 Series it replaces, the X400 has become so attractive that the channel and end-users have adopted the drive as a low-cost alternative to Samsung's 850 EVO.

It's no secret that SanDisk hit a rough patch in its consumer SSD release schedule; it's been two years since the company released the Extreme Pro, which some regard as the best consumer SATA 6Gbps SSD ever released. Still, premium high-performance SSDs have moved on. SanDisk's tier one (and even tier two) competitors all have NVMe products shipping, and the tier three companies are not far behind.