Icy Dock ExpressCage

Tool-less Yet Secure U.2/U.3 NVMe SSD Enclosure for 3.5" Bays
The ExpressCage MB741V4P-B is engineered to provide enterprise-grade U.2 and U.3 NVMe SSD integration in any standard 3.5" device bay. Designed with ICY DOCK’s signature ExpressTray, it offers completely tool-less SSD installation for quick drive swaps, while retaining the stability of a tray-and-screw mounting system for long-term use in demanding environments. Supporting PCIe 4.0 x4 interface with transfer speeds of up to 64Gbps (host dependent), the MB741V4P-B delivers the high-bandwidth performance required for servers, workstations, and IPC systems handling frequent drive access, high-speed data transfer, and mission-critical workflows.

Space Saver for 3.5" Bay Installations
By utilizing a single external 3.5" bay, the MB741V4P-B maximizes space efficiency in compact systems. It is ideal for small-form-factor PCs, embedded platforms, edge computing systems, in-vehicle PCs, and enterprise workstations where internal space is limited. When paired with an onboard NVMe port or an M.2-to-U.2 adapter, the MB741V4P-B can be connected without consuming valuable PCIe expansion slots—freeing them for GPUs, networking cards, or other system upgrades.

Tool-less SSD Installation with Broad Drive Compatibility
The ExpressTray allows users to install or remove a U.2/U.3 NVMe SSD in seconds- no tools required. Simply insert the drive into the tray, close the latch, and slide it into the enclosure. The tray supports both 7mm and 15mm U.2/U.3 SSDs, while the bay design accommodates drives ranging from 5mm to 15mm in height. This makes it an ideal solution for environments where quick drive swaps and broad SSD compatibility are essential, such as IT maintenance, data recovery, or production workflows.

Additional Screw Mounting Flexibility
For systems operating in high-vibration environments or for users who prefer additional mechanical stability, the tray provides optional screw mounting points to secure the SSD firmly in place. This ensures reliable operation during transportation or in industrial deployments.

Drive Ejection & LED Indicators
An easy-access drive ejection button allows smooth tray removal without excessive force, while the front-panel LED provides instant visual feedback on drive power and activity status—helping users quickly monitor SSD operation.

Optimized Ventilation for Passive Cooling
The metal housing and strategically placed ventilation holes enhance natural airflow, ensuring that high-performance U.2/U.3 NVMe SSDs operate within optimal temperature ranges even under sustained workloads.

Next-Gen Connectivity with U.2 SFF-8639 Interface
The MB741V4P-B uses a U.2 (SFF-8639) connector to deliver both PCIe data lanes and power, ensuring compatibility with the latest U.2/U.3 NVMe SSDs. When paired with a SlimSAS or OCuLink-to-U.2 cable, it offers a clean and efficient connection path for high-speed enterprise storage integration.

Exceptional Product Compatibility
The MB741V4P-B is compatible with motherboards, RAID/HBA cards, and M.2 adapters from major brands including Adaptec, Areca, Broadcom, HighPoint, Supermicro, and more. This compatibility gives you the freedom to choose from a wide range of hardware options, moving beyond the constraints of single-brand system configurations.

USB4 to U.2/U.3 NVMe SSD Adapter
Quickly access your removable U.2/U.3 NVMe SSD outside the system with the EZ-Adapter MB307U-1VB. Simply insert a compatible ICY DOCK removable tray directly into the adapter and connect through USB4 for portable storage access, backup, validation, or high-speed data transfer workflows. Supporting up to 40Gbps bandwidth, the MB307U-1VB extends removable NVMe storage beyond the host system without reinstalling the SSD.

Optional M.2 NVMe to U.2 Conversion with EZConvert The EZConvert MB705 se
The EZConvert MB705 series converts M.2 NVMe SSDs into a U.2 form factor with tool-less SSD installation. The MB705M2P-B uses a 9.5mm enclosure with a more substantial protective structure and an aluminum heatsink lid for enhanced passive cooling, while the MB705M4P-S features a slimmer 7mm full-metal design that is better suited for high-density U.2 systems. Both models use thermal pads to transfer SSD heat to the enclosure for efficient passive cooling.