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Small black rectangular card reader with two slots

Lexar

Lexar LRW450UBNA 2-in-1 USB 3.1 Card Reader 312MB/s

SKU CH-80MS-TGC0N MPN LRW450UBNA

Compact 2-in-1 SD and microSD reader with simultaneous slot access and 312 MB/s transfer over USB 3.1

  • Type2-in-1
  • Interfaceusb, microsd
  • Installation TypeCompact
  • Support - Compact FlashNo
  • Support - MMCNo
  • Support - SDNo
  • Read SD and microSD cards at once for faster workflow
  • Up to 312 MB/s transfer speed with UHS-II cards
  • Backwards compatible with UHS-I cards at 170 MB/s
  • Works with USB 3.1 and 2.0 ports on Mac and PC
  • Compact 2.51 x 1.5 x .6 inch design fits any bag

Compact SD and microSD reader

The Lexar LRW450UBNA is a 2-in-1 card reader with two slots that read SD and microSD cards at the same time. It connects through a USB 3.1 interface and is coloured black. The compact form factor measures 2.51 by 1.5 by .6 inches and suits photographers or videographers who need fast, portable media offload on Mac or PC.

Upgrade from slower USB 2.0 readers

This model reaches 312 MB/s with UHS-II cards and remains backwards compatible with UHS-I at 170 MB/s. The jump is worth it when your workflow moves large RAW bursts or 4K footage and the current reader caps at USB 2.0 speeds. Supported formats include SD, SDHC, SDXC, microSD, microSDHC and microSDXC.

Suits creators with UHS-II cards who need

Buyers who want more storage formats such as CompactFlash, MMC or xD should look at something else because this unit supports only SD and microSD. It also does not serve users who require an internal drive bay or a reader with more than two slots.

Highlights

  • Read SD and microSD cards at once for faster workflow
  • Up to 312 MB/s transfer speed with UHS-II cards
  • Backwards compatible with UHS-I cards at 170 MB/s
  • Works with USB 3.1 and 2.0 ports on Mac and PC
  • Compact 2.51 x 1.5 x .6 inch design fits any bag

Specifications

BrandLexar
ModelLRW450UBNA
Type2-in-1
Interfaceusb, microsd
Installation TypeCompact
Support - Compact FlashNo
Support - MMCNo
Support - SDNo
Support - xDNo
Slots2
CompatibilitySD Card
Dimensions2.51 L x 1.5 W x 0.6 H inches
ColorBlack
FeaturesSupports various media types such as with Compact functionality. Compatible with and offers a data transfer rate of up to 312 megabytes_per_second using usb, microsd interfaces.
Shipping weight0.06 kg
Package size117 × 66 × 5 mm

Questions about this item

How much clearance does the 2.51 by 1.5 by .6 inch Lexar LRW450UBNA need beside a USB 3.1 port?

The reader measures 2.51 inches long, 1.5 inches wide and .6 inch high, so allow at least that much space next to the port; its compact shape fits beside most adjacent connectors without blocking them.

What is the correct way to insert an SD or microSD card so both slots can be used at the same time?

Align each card with its labelled slot — SD on one side, microSD on the other — and push gently until it clicks; forcing a card upside-down is the common mistake that bends the internal contacts.

When should the LRW450UBNA be replaced if transfer speeds drop below the rated 312 MB/s?

Try a different USB 3.1 port and a known-good UHS-II card first; if sustained reads still fall well under 312 MB/s after cleaning the slot contacts with compressed air, the reader’s controller has likely degraded and the unit should be replaced.

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