ICY DOCK ExpressSlot Elite MB221E5P-B E1.S NVMe to PCIe 5.0 Rack

The ICY DOCK ExpressSlot Elite MB221E5P-B occupies a narrow but useful niche: it lets you run a single E1.S NVMe SSD from a standard PCIe expansion slot while keeping that drive removable. The interface is PCIe 5.0 x4, rated for up to 128Gbps per SSD, and the card is happy in a x4, x8, or x16 slot. It fits the single-slot, half-height 3/4-length PCIe form factor, which points it squarely at compact workstations and servers where a full-height card simply won't clear. This is a specialist part for builders who have settled on the enterprise-leaning E1.S format and want front-accessible serviceability rather than a drive bolted permanently to a carrier.

Construction leans hard on cooling and convenience. A 50mm frameless fan feeds a sealed airflow chamber, a design intended to funnel air across the SSD instead of dispersing it. The drive installs screwlessly into a removable caddy, so replacements take seconds and don't require tools or teardown. EMI grounding guards the drive against electrical damage, and Active Power Technology keeps the fan and LED dark until a drive is seated, which trims noise and power when the bay sits empty. ICY DOCK's 5-year limited warranty against all defects signals confidence in the hardware and gives buyers a longer safety net than most adapter cards offer.