ONTEN OTN-CR537S USB-A + USB-C SD/TF Card Reader with USB 3.0 Hub, 5Gbps, OTG, Up to 2TB Card Support, Plug & Play for Windows, Mac, Linux & Chrome OS

Expert Features

  • 3-in-2 Multifunction Card Reader : Combines SD, TF/MicroSD, and USB 3.0 Hub functionality with both USB-A and USB-C host connections in one compact device.
  • Dual USB-A + USB-C Interfaces : Connect directly to compatible computers, laptops, tablets, and OTG-enabled mobile devices through either USB-A or USB-C.
  • Built-In USB 3.0 Hub : Adds a dedicated USB 3.0 port for connecting compatible USB flash drives or external storage devices.
  • Up to 5Gbps USB 3.0 Transfer : The USB 3.0 interface supports stated transfer speeds up to 5Gbps for compatible devices.
  • SD + TF Card Support : Provides dedicated SD and TF/MicroSD card slots for flexible photo, video, and file transfer.
  • Up to 2TB Memory Card Capacity : Supports compatible memory cards with a stated maximum capacity of 2TB.
  • Broad Card Compatibility : SD slot supports SD and SDHC; TF slot supports MicroSD, SDHC, MMC, RS-MMC, and UHS-I formats as provided.
  • Memory Card + USB Storage Workflow : Supports simultaneous use of a compatible memory card and USB storage device, helping transfer files between cards, flash drives, and hard drives.
  • OTG Support : Allows compatible phones and tablets to access photos and files directly without requiring a conventional computer.
  • Plug & Play : No additional driver installation is stated as required; supports hot plugging and automatic detection.
  • Wide OS Compatibility : Listed for Windows 11/10/8.1/8/7/XP/Vista, Mac OS, Linux, and Chrome OS.
  • Protective Dual-Cap Design : Removable caps help protect both connector ends during transport and storage.
  • Integrated Hanging Loop : Built-in attachment point allows the compact reader to be carried with a keyring or similar accessory.

Expert Specs

Specification Details
Brand ONTEN
Model / SKU OTN-CR537S
Product Type USB-A + USB-C SD/TF Card Reader with USB 3.0 Hub
Host Interfaces USB-A + USB-C
USB Hub 1 × USB 3.0
USB 3.0 Maximum Stated Speed Up to 5Gbps
Memory Card Slots SD + TF / MicroSD
SD Support SD / SDHC
TF Support MicroSD / SDHC / MMC / RS-MMC / UHS-I
Maximum Stated Card Capacity 2TB
OTG Support Yes
Memory Card + USB Storage Simultaneous Use Supported
Plug & Play Yes
Hot Plugging Supported
Automatic Detection Supported
Windows Compatibility Windows 11 / 10 / 8.1 / 8 / 7 / XP / Vista
Other OS Compatibility Mac OS / Linux / Chrome OS
Connector Protection Dual removable caps
Carry Feature Hanging / keyring attachment point
Product Color Teal / Black / Silver accents, as shown

Features & Compatibility

OTN-CR537S
ONTEN USB-A&USB-C SD3.0 /TF3.0 CARD READER WITH USB 3.0 HUB