Many USB-A to USB-C cables are intended for charging only, or they follow the USB 2.0 spec despite having USB 3.x branding. Others might support data, but not with enough power delivery or signaling for something like an external SSD. When a drive like your Silicon Power SSD doesn’t show up, it usually means the cable either can’t provide enough power, or it’s not fully wired for high-speed data and power transmission simultaneously.
To help, these are the things you need to look for when purchasing the correct cable:
- Full USB 3.x support (not USB 2.0) – You want a cable that explicitly states USB 3.1 Gen 1 (5 Gbps) or higher, with data and power supported—not just "charging." If the listing is vague, avoid it.
- Directional compatibility – When going from USB-A to USB-C, the cable needs to be designed for USB-C device hosts (in your case, the SSD), not USB-C power sources or USB-A device hosts. Some cables are designed for charging phones (USB-C as the device), not powering or communicating with external drives.
- Avoid "bargain" cables – Unfortunately, many budget cables cut corners. Stick with reputable brands like Anker, Cable Matters, UGREEN, or StarTech. Look through Q&A and reviews—search specifically for people using SSDs or external hard drives. However, be wary that all reviews may not be created by humans, regardless of the seller.
