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Black compact card reader with USB-C and USB-A connectors, two card slots and protective end caps

STARTECH

STARTECH SDMSDRWU3AC USB-C & USB-A card reader 5 Gbps

SKU CH-EG27-ZJDHW MPN SDMSDRWU3AC

Compact dual-slot reader transfers SD and microSD files via USB-C or USB-A at 5 Gbps

  • Interface type1 x USB Type-C (24 pin) USB 3.0, 1 x USB 3.1 USB Type-A (9 p
  • Slots2
  • Installation typeExternal
  • Product colorBlack
  • Compatible withSD/MMC (Secure Digital/Multimedia Card), SDHC (Secure Digita
  • Product dimensions0.4 in × 0.8 in × 3.1 in
  • Read SD and microSD cards on USB-C or USB-A devices
  • 5 Gbps USB 3.0 speeds for fast file transfers
  • Thunderbolt 3 port compatible for modern laptops
  • Compact 0.40" x 0.80" x 3.10" design fits any bag
  • No driver installation needed for instant use

USB-C and USB-A card reader for SD and microSD

This external reader connects to USB-C or USB-A ports on laptops, tablets, smartphones and desktops. It accepts full-size SD and microSD cards including SDHC, SDXC and MMC formats. The compact black housing measures .40" x .80" x 3.10" and requires no driver installation.

Dual USB 3.0 interface at 5 Gbps

The device provides one USB Type-C connector with 24 pins and one USB 3.1 Type-A connector operating at Gen 1 speed. Both interfaces support data transfer rates up to 5 Gbps and are backward compatible with USB 2.0 hosts. Thunderbolt 3 ports also accept the USB-C plug.

Sustained transfers limited by card speed

Under continuous load the reader delivers whatever throughput the inserted SD or microSD card can sustain. The USB 3.0 link does not bottleneck typical UHS-I media, but UHS-II or faster cards will not reach their peak rates through this 5 Gbps interface. Heat buildup is negligible in the small enclosure.

How it compares

Measured against everything we stock in USB & Internal Card Readers, at today’s prices. Recalculated every night.

Price $18.99
Typical for this category: the median of 511 items is $18.99.

Specifications

Product
Brand nameStarTech.com
Model nameSDMSDRWU3AC
Product colorBlack
Ports & slots
Interface type1 x USB Type-C (24 pin) USB 3.0, 1 x USB 3.1 USB Type-A (9 pin, Gen 1, 5 Gbit/s)
Slots2
Size & build
Product dimensions0.4 in × 0.8 in × 3.1 in
Shipping weight0.03 kg
Package size100 × 70 × 20 mm
Compatibility
Compatible withSD/MMC (Secure Digital/Multimedia Card), SDHC (Secure Digital High Capacity), SDXC (Secure Digital eXtended Capacity), Micro-SD (Micro Secure Digital), Micro-SDHC (Micro Secure Digital High Capacity), Micro-SDXC (Secure Digital eXtended Capacity)
Support - MMCYes
Support - SDYes
In the box
In the box1 x card reader / writer
2 x end caps
1 x quick-start guide
More details
Installation typeExternal

Questions about this item

What does the 5 Gbps figure mean when I am copying files from an SD card?

It is the USB 3.1 Gen 1 interface ceiling; real-world throughput will be lower and depends on the card's own read speed.

Which USB standard does the Type-C port use and what does that limit?

The Type-C port runs USB 3.0, so the 5 Gbps link caps total bandwidth for both slots combined.

How much space does the reader need to sit beside a laptop port?

The body measures 0.40" x 0.80" x 3.10", so it fits alongside most adjacent ports without blocking them.

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