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Why does the enclosure keep disconnecting from my Android/Samsung phone?

High-performance SSDs can cause connection issues when used with certain Android devices, such as the Samsung Galaxy S24 Ultra. These issues often appear as frequent disconnects and reconnects, especially during file transfers.

Why It Happens:

• High-performance SSDs (e.g., WD Black) can draw significant power, especially during initial file transfers.

• Many Android devices, including Samsung phones, enforce a USB 3.0 current limit of 900mA.

• If the SSD exceeds this limit, the phone’s built-in overcurrent protection activates (“hiccup mode”), momentarily cutting power to the USB-C port.

• Once the power demand drops, the phone restores the connection, causing a repeating cycle of disconnections.

Suggested Solutions:

• Use a lower-power SSD such as the WD Green, which consumes less power and is less likely to trigger overcurrent protection.

• Avoid high-performance SSDs that are known to exceed 900mA, especially during startup.

• Add external power support by connecting your SSD enclosure through a USB-C hub with Power Delivery (PD), allowing the drive to draw power externally instead of relying solely on the phone’s port.

What is the maximum storage capacity supported by the Mini NVMe SSD Enclosure?

The Satechi Mini NVMe SSD Enclosure supports M.2 NVMe SSDs up to 8TB in capacity. Please ensure the SSD is: M-Key NVMe protocol (SATA SSDs are not supported) Size 2230

Why am I not getting the advertised speeds of my NVMe drive on the Mini NVMe Enclosure?

We understand it can be confusing when your SSD doesn’t seem to reach the speeds advertised, so we’re happy to help clarify. The speed ratings shown for NVMe SSDs are usually based on internal testing using direct connections inside a computer (like an M.2 slot). When you use the SSD in an external enclosure, especially one using USB 3.2 Gen 2 (10Gbps), you’ll likely see lower speeds, and that’s expected. This is because external enclosures use a different connection type that has its speed limits. 

To make sure you’re getting the best results: Ensure your NVMe drive is properly formatted (APFS or ExFAT). Plug the enclosure into a USB-C port on your computer that supports 10Gbps speeds or more (look for USB 3.2 Gen 2 or a Thunderbolt/USB-C port). You can also try: Testing with a different SSD. Reformatting the drive to a different supported format. Connecting the enclosure to another computer with a USB 3.2 Gen 2 or Thunderbolt port. Finally, please make sure your system is up to date. We also recommend removing other USB-C devices and restarting your computer to refresh connections.

Will the magnetic components interfere with the SSD or corrupt any data?

No, it is completely safe.

What are the format constraints for an SSD?

A 2230 NVMe drive must either be formatted to ExFAT or APFS. ExFat would be optimal if you are using both Windows and Mac operating systems, whereas APFS is strictly for iPhone and iPad.

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