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Review: Lexar LRWM05U-7000 microSD UHS-II Card Reader USB 3.0

Lexar LRWM05U-7000 microSD UHS-II Card Reader

Introduction

The Lexar LRWM05-7000 microSD card reader is included with Lexar Professional 1000x and 1800x UHS-II microSD cards. It is not sold separately. The card reader supports all microSD cards including standard SD, UHS-I and UHS-II. It supports USB 3.0 and is backwards compatible with USB 2.0.

Externally, the case is has black and gold textured plastic with a tiny hole that could be used to attach it to a string. The reader measures 1 1/4 inches (32mm) in length including the USB plug. It is 11/16 inches (17mm) wide and 3/8 inches (9mm) tall. When an microSD card is inserted it does not protrude past the bottom edge the reader. The card fits snugly in the slot. There is no card indicator light.

Performance

Since this is a "free" card reader one might not expect the best performance, but this diminutive device provided some of the highest transfer speeds among all readers.

Reader: Lexar LRWM05U-7000 UHS-II microSD Reader
Benchmark: CrystalDiskMark 3.0.3 x64
Program settings: 1000 MB, 5 passes, random test data
Operating system: Windows 8.1 Pro
Motherboard: Gigabyte GA-Z77X-UD3H
Processor: Intel Core i7-3770K @ 4.40GHz
RAM: 32GB DDR3 1600

Lexar LRWM05U-7000 UHS-II microSD Reader
Card Benchmarks
Sequential
Read
(MB/s)
Sequential
Write
(MB/s)
Lexar Professional 1800x microSD UHS-II 32GB237.127202.682
SanDisk Extreme Pro UHS-II 275MB/s microSDXC 64GB232.294106.465
Lexar Professional 1000x microSD UHS-II 32GB150.65751.805
SanDisk Extreme 90MB/s U3 V30 microSDXC 128GB94.14463.910
SanDisk Ultra 80MB/s microSD 64GB94.00920.020
SanDisk Ultra 80MB/s microSD 128GB93.95873.543
SanDisk Extreme Plus 80MB/s microSD 32GB93.85865.340
SanDisk Extreme Plus 95/90 MB/s microSD 32GB93.72387.740
SanDisk Extreme Pro 95MB/s microSDHC 32GB93.70787.688
SanDisk Extreme Plus 95/90 MB/s microSD 64GB93.63187.740
SanDisk Extreme Pro 95MB/s microSDXC 64GB93.47387.857
SanDisk Extreme 90MB/s microSDHC 32GB93.39848.635
PNY Elite-X microSDHC 32GB93.21575.841
PNY Elite microSDXC 128GB93.14128.516
PNY Elite microSDXC 64GB92.86032.610
Patriot EP Series microSDXC 64GB92.71280.056
Samsung EVO Select microSDXC 256GB92.70484.399
PNY Pro Elite microSDXC 64GB92.70484.413
Transcend 633x microSDHC 32GB92.69685.070
Kingston U3 (90/80) microSD 64GB92.65583.585
PNY Turbo Performance microSDXC 64GB92.64757.309
Samsung PRO Plus microSDXC 64GB92.53284.068
PNY Turbo Performance U3 microSD 32GB92.50055.722
Patriot EP PRO microSDXC 64GB92.47580.020
Lexar Professional 633x microSDXC 64GB92.46727.981
Samsung EVO Select microSDXC 64GB92.44325.242
Samsung PRO microSDXC 64GB92.41078.357
PNY Elite-X microSDXC 64GB92.31270.926
Samsung PRO Select microSDXC 64GB92.23984.747
Transcend Ultimate 633x microSD 64GB92.18380.548
Kingston U3 (90/80) microSD 32GB92.09383.386
SanDisk Extreme 90MB/s microSDXC 64GB91.56343.242
Lexar Professional 633x microSDXC 200GB91.09336.812
SanDisk Ultra 90MB/s microSD 200GB90.62921.127
Samsung PRO Plus microSDXC 128GB90.04582.734
Samsung PRO Select microSDXC 128GB89.44682.228
Samsung EVO Plus 128GB microSDXC86.84622.387
Lexar Professional 633x microSDXC 128GB84.54922.404
Samsung EVO Select microSDXC 128GB82.40922.460
SanDisk Ultra 80MB/s microSD 32GB82.35818.016
SanDisk Extreme U3 microSD 32GB74.53153.964
SanDisk Extreme U3 microSD 64GB67.98855.993
SanDisk Ultra microSD 32GB46.42414.843
SanDisk Ultra microSD 64GB46.38515.700
Samsung EVO microSDXC 64GB46.37323.382
Samsung EVO microSD 32GB46.33024.753