ICY DOCK ExpressSlot Elite MB221E5P-B Removable E1.S NVMe SSD to PCIe 5.0 x4 Mobile Rack Enclosure / Adapter Card for PCIe Expansion Slot

Bring PCIe Gen5 Removable E1.S Storage to the PCIe Expansion Slot

The ExpressSlot Elite MB221E5P-B is ICY DOCKs first removable E1.S (9.5mm) SSD mobile rack enclosure designed for the PCIe expansion slot, delivering a practical path to deploy next-generation EDSFF storage in servers, workstations, and edge systems. It installs into a single-slot, half-height 3/4-length PCIe x4 slot and provides a rear-accessible removable caddy at the PCIe bracket for faster SSD maintenance and replacement.

PCIe 5.0 x4 Performance for E1.S NVMe SSDs

Built on a PCIe 5.0 x4 interface, the MB221E5P-B supports up to 128Gbps bandwidth per SSD, enabling high-speed NVMe performance for data-intensive workloads while leveraging a standard PCIe expansion slot deployment model.

Removable E1.S Caddy for Faster Service and Swap Cycles

Traditional enterprise SSD installation often requires opening the chassis and working around cables and internal bays. With the ExpressSlot Elite MB221E5P-B, the removable E1.S caddy brings drive access to the rear PCIe bracket area, making SSD replacement and maintenance more convenient for system integrators and IT teams managing frequent drive swaps.

The caddy supports E1.S 9.5mm SSDs and offers screwless SSD installation for faster handling during validation, deployment, and service cycles.

Purpose-Built Active Cooling for PCIe Gen5 E1.S SSDs

PCIe Gen5 SSDs can generate substantial heat under sustained workloads. The MB221E5P-B integrates a 50mm frameless fan and a sealed airflow chamber design to maximize cooling efficiency. By guiding airflow through a controlled path (rather than allowing air to escape through open gaps), the enclosure helps move heat away from the SSD more effectively - supporting stable performance during continuous operation and heavy workloads.

Where E1.S Makes Sense?

E1.S (EDSFF) SSDs are increasingly adopted in modern platforms that prioritize density, serviceability, and PCIe Gen5 performance. The MB221E5P-B is well suited for use cases such as:

1. Enterprise servers and storage appliances adopting EDSFF architectures
2. AI / ML servers and data pipelines requiring high throughput NVMe storage
3. Edge computing systems that need compact, serviceable NVMe media
4. Telecom / networking platforms and rugged deployments where front access improves maintenance workflows
5. System validation labs and OEM integration environments testing PCIe Gen5 E1.S SSD behavior