The usams SJ491HUB01 is a compact USB-C to USB 3.0 hub adapter that expands a single USB-C port into multiple USB 3.0 ports and a MicroSD card slot. Designed to attach to laptops, tablets and smartphones with USB-C, this adapter enables simultaneous connection of USB peripherals such as flash drives, external hard drives, mice and keyboards while providing direct access to MicroSD storage. Its small form factor and plug-and-play operation make it convenient for mobile work, data transfer and on-the-go file access.
Advantages
The adapter supports USB 3.0 data transfer speeds on its USB-A ports, enabling fast file copying between connected devices and the host device. The integrated MicroSD card slot allows direct reading and writing of memory cards without additional readers. Its USB-C input provides a single-cable connection, reducing clutter and enabling easy expansion of devices with limited ports. The lightweight construction and compact dimensions make it easy to carry in a bag or pocket.
Suitable for
- Connecting USB flash drives and external hard drives to USB-C laptops and tablets
- Attaching USB peripherals such as mice, keyboards, printers or game controllers
- Reading and transferring photos, videos and documents from MicroSD cards
- Expanding port availability on ultrabooks and compact laptops
- Using with smartphones and tablets that support USB-C OTG for data access
Key specifications
- Input interface: USB-C
- Output interfaces: multiple USB 3.0 Type-A ports
- Memory card slot: MicroSD card reader support
- Data transfer: USB 3.0-class transfer rates (backward compatible with USB 2.0/1.1)
- Power: bus-powered from host USB-C port (no external power required for standard USB devices)
- Form factor: compact, portable adapter design
How to use
Connect the USB-C plug of the usams SJ491HUB01 to an available USB-C port on your laptop, tablet or phone. Insert USB devices into the USB 3.0 Type-A ports and insert a MicroSD card into the card slot. The adapter is typically recognized automatically by modern operating systems and mobile devices that support USB OTG, enabling immediate access to connected drives and the MicroSD card. For large transfers, ensure the host device remains powered and do not remove storage media during active read/write operations.
Usage recommendations
For reliable performance, use high-quality USB cables and ensure connected devices do not exceed the power capabilities provided by the host USB-C port. When using with mobile devices, verify OTG support and check file system compatibility (exFAT, FAT32, NTFS) for seamless file exchange. Safely eject removable storage from the operating system before unplugging the adapter.
