ICY DOCK ExpressSlot Elite MB303E5P-B Removable 2 Bay E1.S NVMe SSD (9.5mm) to PCIe 5.0 x8 Mobile Rack Enclosure / Adapter Card for PCIe Expansion Slot (PCIe Bifurcation required)

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

The ExpressSlot Elite MB303E5P-B expands on ICY DOCKs removable E1.S storage platform by enabling two E1.S (9.5mm) NVMe SSDs within a single PCIe expansion slot*. Designed for high-performance servers, workstations, and edge platforms, it installs into a single-slot, full-height 3/4-length PCIe x8 or PCIe x16 slot and provides dual rear-accessible removable caddies at the PCIe bracket for faster SSD maintenance and replacement.

*Note: to support dual SSD operation, the host system must provide PCIe lane bifurcationeither a PCIe x8 slot split into x4/x4, or a PCIe x16 slot split into x4/x4/x4/x4ensuring each SSD receives a dedicated PCIe 5.0 x4 connection.

PCIe 5.0 x4 Performance per SSD for High-Speed NVMe Workloads

Built on a PCIe 5.0 x8 interface, the MB303E5P-B delivers up to 128Gbps bandwidth per SSD via independent PCIe x4 links. This architecture enables full-speed NVMe performance for each drive, making it ideal for data-intensive workloads while maintaining a clean, expansion-slot-based deployment model.

Dual Removable E1.S Caddies for Faster Service and Swap Cycles

Traditional enterprise EDSFF SSD installations often require opening the system chassis and navigating internal cabling. With the MB303E5P-B, both E1.S SSDs are accessible directly from the PCIe bracket through dual removable caddies, simplifying drive replacement and reducing maintenance time.

Each caddy supports E1.S 9.5mm SSDs and features screwless SSD installation, allowing faster handling during system validation, deployment, and service operations - especially valuable in environments with frequent drive swap cycles.

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

PCIe Gen5 SSDs generate significant heat under sustained workloads. The MB303E5P-B integrates a 50mm frameless fan along with a sealed airflow chamber design to efficiently cool both SSDs.

By directing airflow through a controlled internal path, the enclosure improves heat dissipation across both driveshelping maintain consistent performance, reduce thermal throttling, and support long-duration, high-throughput operations.

Where E1.S Makes Sense for Dual-Drive PCIe Deployment

E1.S (EDSFF) SSDs are increasingly adopted in modern platforms that prioritize density, serviceability, and PCIe Gen5 performance. The MB303E5P-B is especially well suited for scenarios that require compact dual-drive deployment within a single PCIe slot, 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