The UGREEN CM321 (70610) USB-C to 2.5-inch SATA Converter makes it easy to connect compatible SATA HDDs and SSDs to a USB-C computer. It provides convenient external access to internal storage for backups, data migration, computer upgrades and everyday file transfers.
Top Highlights
- USB-C 5GbpsFast storage access.
- 2.5-inch SATAHDD and SSD support.
- UASP & TRIMEfficient drive operation.
- 50cm CableConvenient connection.
About the UGREEN CM321 (70610)
The UGREEN CM321 is a USB-C to SATA III converter designed for standard 2.5-inch SATA HDDs and SSDs. It features a USB-C 3.1 Gen 1 host connector, a combined SATA 7+15-pin drive connector and data transmission up to 5Gbps. The adapter supports UASP, along with TRIM and S.M.A.R.T. functions when supported by the connected drive and host system. Its 50cm integrated cable, status indicator and plug-and-play operation make it convenient for external storage access without a separate enclosure.
Design & Performance
USB 3.1 Gen 1 Data Transfer up to 5Gbps
The UGREEN CM321 connects to a compatible USB-C host port using USB 3.1 Gen 1 technology, providing a theoretical maximum interface speed of 5Gbps. This makes it useful for transferring photographs, videos, documents and other files between a computer and a connected SATA drive.
Actual transfer speeds depend on the SATA HDD or SSD, computer USB controller, file system and workload. The SATA III interface supports up to 6Gbps at the drive side, but the USB connection limits the adapter’s maximum host-side signaling speed to 5Gbps.
Dedicated Support for 2.5-inch SATA HDDs and SSDs
The CM321 uses a combined SATA data and power connector to connect standard 2.5-inch SATA hard drives and solid-state drives. It supports SATA III and backward-compatible SATA II and SATA I storage, making it suitable for accessing drives from different generations of laptops and computers.
This adapter does not support 3.5-inch SATA hard drives because it lacks the additional 12V power supply required by those drives. It is also not compatible with M.2 SATA, M.2 NVMe, IDE or SAS storage devices.
UASP, TRIM and S.M.A.R.T. Function Support
The adapter supports USB Attached SCSI Protocol (UASP), which can improve storage command handling and transfer efficiency on compatible systems. It also supports TRIM functionality for suitable SSDs and S.M.A.R.T. reporting when the connected drive, operating system and software support these features.
These functions help make the adapter suitable for regular SSD access and storage maintenance. Their availability and effectiveness depend on the complete hardware and software configuration rather than the converter alone.
Easy Backups, Data Migration and Drive Access
The UGREEN CM321 lets users access a compatible internal SATA drive through an external USB-C connection. It can be used to copy personal files, back up important documents, migrate accessible data to a replacement drive or prepare storage during a laptop upgrade.
It is also useful for computer technicians working with spare or removed 2.5-inch SATA drives. Data recovery is possible only when the drive remains readable; the adapter cannot repair damaged storage or guarantee recovery from a failed drive.
USB-Powered Operation and Activity Indicator
Compatible 2.5-inch SATA HDDs and SSDs can receive operating power through the USB-C connection, so a separate power adapter is normally unnecessary. This simplifies temporary storage connections and helps reduce cable clutter on a desk.
The built-in LED indicator provides a visual reference for connection or activity status. Some high-power or aging mechanical drives may require more power than a particular host port can supply, so reliable operation depends on adequate USB power availability.
50cm Cable and Plug-and-Play Design
The integrated 50cm cable provides convenient reach between a computer’s USB-C port and a connected SATA drive. Its compact adapter body is easy to carry in a laptop bag or keep with computer maintenance accessories.
The CM321 is designed for plug-and-play use on supported Windows, macOS, Linux and Chrome OS systems without a dedicated adapter driver. For safe use, place the exposed drive on a stable surface and complete file transfers before disconnecting it.
Who It’s For
Laptop Owners: Access old 2.5-inch SATA drives after a storage upgrade. Desktop Users: Connect spare SATA HDDs or SSDs externally. Computer Technicians: Test and access compatible drives during maintenance. Office Professionals: Back up documents and transfer work files. Students: Move files between compatible storage devices and computers. Home Users: Retrieve accessible photographs, videos and personal data from older drives.
Connect compatible 2.5-inch SATA drives through USB-C with 5Gbps data transfer and UASP support.
| Product Specifications | |
|---|---|
| Tech Specs | Product Type |
| Host Connector | USB-C Male |
| Drive Connector | SATA 7+15 Pin |
| USB Standard | USB 3.1 Gen 1 |
| Data Transmission | Up to 5Gbps |
| SATA Standard | SATA III / II / I |
| SATA Interface Speed | Up to 6Gbps |
| Compatible Drives | 2.5-inch SATA HDD and SSD |
| UASP Support | Yes |
| TRIM Support | Yes, on Compatible Systems |
| S.M.A.R.T. Support | Yes, on Compatible Systems |
| Power Supply | USB Bus-Powered |
| Cable Length | 50cm |
| LED Indicator | Yes |
| Chipset | ASM1153E |
| Operating Systems | Windows, macOS, Linux, Chrome OS |
| Material | ABS |
| Color | Black |
| Driver Installation | Not Required on Supported Hosts |
| 3.5-inch SATA Support | No |
| Warranty Information | |
| Warranty | N/A |
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