❶ The 4TB WD Blue SN5000, based on QLC technology, offers competitive performance with single-sided design suitable for various devices. ❷ It features BiCS6 QLC flash, promising efficiency and high data density, though it may lag slightly in write performance compared to TLC. ❸ Pricing and optimal utilization of its PCIe 4.0 interface remain concerns, but it presents a viable option for mainstream users if competitively priced.