Drive Enclosures & Docks
OWC Express 4M2 Ultra
Why choose it
Choose the OWC Express 4M2 Ultra for four compatible M.2 SSDs on a Thunderbolt host. It accepts M-Key 2242 or 2280 modules without heatsinks; Thunderbolt 5 on Mac requires macOS 15.3 or later.1
- Drive bays
- 41
- Compatible drives
- Any PCIe M.2 SSD with 2280 | 2242 M-Key form factor (Host: NVMe SSDs with a heatsink are not supported)1
- Interface
- Thunderbolt 5 (Host: Mac: macOS14.6.x or later; Thunderbolt5 requires macOS15.3.x or later; Thunderbolt3 and Intel based systems require macOS15.x or later; PC: Windows11(24H2) or later)1
The details
Specifications
Core specifications7
| Interface | Thunderbolt 5 (Host: Mac: macOS14.6.x or later; Thunderbolt5 requires macOS15.3.x or later; Thunderbolt3 and Intel based systems require macOS15.x or later; PC: Windows11(24H2) or later)1 |
|---|---|
| Enclosure type | Closed enclosure1 |
| Drive bays | 41 |
| Tool-free | No1 |
| RAID modes | RAID 0/1/4/5/10/JBOD (Protocol: SoftRAID or another RAID utility; bare enclosure can be purchased without SoftRAID)2 |
| Extra ports | second Thunderbolt 5 port2 |
| Warranty | 2 years2 |
Fit and compatibility1
| Compatible drives | Any PCIe M.2 SSD with 2280 | 2242 M-Key form factor (Host: NVMe SSDs with a heatsink are not supported)1 |
|---|
More specifications3
| Rated transfer speed | 6,622 MB/s (Host: Array populated with PCIe4.0 or later SSDs; Host interface: Thunderbolt 5 (80Gb/s))2 |
|---|---|
| Included cables | 0.7M (28") Thunderbolt 5 80Gb/s Cable1 |
| Material | solid aircraft-grade aluminum2 |
Specifications not documented (8)
Power source, Cooling, Drive cloning, Weight, TRIM support, Dimensions, Bridge chip, Included drives.