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Compact black USB-C card reader with SD, microSD and USB-A ports

BnmxTek BNMX_US_C4-B RFID USB-C SD Card Reader

SKU CH-57Q3-R7QS6 MPN BNMX_US_C4-B

USB-C adapter with SD, microSD and USB-A ports reads and writes three cards simultaneously

  • ConnectorsUSB Type C
  • Dimensions1.8034 L x 8.3058 W x 9.906 H centimeters
  • Weight0.032 kilograms
  • Universal USB-C compatibility connects iPhone 15, 16 and iPad models instantly
  • Dual SD and microSD slots read and write both card types simultaneously
  • USB-A port expands connectivity for flash drives, keyboards and other peripherals
  • Plug-and-play operation requires no drivers on macOS, Windows, Linux or Chrome OS
  • Compact 1.8 x 8.3 x 9.9 cm design weighs only .032 kg for travel

Universal USB-C Card Reader

The BnmxTek BNMX_US_C4-B is a compact USB-C adapter that reads and writes SD, SDHC, SDXC, Micro SD, Micro SDHC and Micro SDXC cards while also providing a USB-A port for flash drives or peripherals. It connects directly to iPhone 15, iPhone 16, iPad, MacBook, Chromebook and Windows laptops without drivers. Photographers and videographers can transfer 4K footage from cameras or drones on the go.

Suits mobile creators needing multi-format access

Ideal for users who want simultaneous access to two card slots and a USB-A device from a single USB-C port. Not suited for buyers who need CFexpress or XQD card support, or for devices that only offer USB-A host ports without a USB-C connection. The reader requires a host with USB-C OTG capability to function.

Three ports active at once

The defining specification is the ability to read and write across both SD slots and the USB-A port simultaneously, letting you copy files between cards and external storage in one session. Weighing .032 kilograms and measuring 1.8034 L x 8.3058 W x 9.906 H centimeters, it adds minimal bulk to a field kit.

Highlights

  • Universal USB-C compatibility connects iPhone 15, 16 and iPad models instantly
  • Dual SD and microSD slots read and write both card types simultaneously
  • USB-A port expands connectivity for flash drives, keyboards and other peripherals
  • Plug-and-play operation requires no drivers on macOS, Windows, Linux or Chrome OS
  • Compact 1.8 x 8.3 x 9.9 cm design weighs only .032 kg for travel

Specifications

BrandBnmxTek
ModelBNMX_US_C4-B
Part NumberBNMX_US_C4-B
ConnectorsUSB Type C
Dimensions1.8034 L x 8.3058 W x 9.906 H centimeters
Weight0.032 kilograms

Questions about this item

How do I install the BNMX_US_C4-B reader and what step do users often miss?

Plug the USB-C connector into your device, insert the SD or microSD card, then open the built-in Files app on iPhone or iPad to see the card appear under its own name.

What maintenance or replacement will the BNMX_US_C4-B need later?

No scheduled maintenance is required; keep the USB-C plug and card slots free of dust and replace the unit only if the connector or a slot becomes physically damaged.

What limit appears first during sustained transfers with the BNMX_US_C4-B?

The practical limit is the speed rating of the SD or microSD card you insert, since the reader simply passes data through its USB-C and USB-A ports.

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