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Sony MRW-S1 High Speed UHS-II SD Card Reader Review

Sony MRW-S1 UHS-II SD Card Reader

Introduction

The Sony S1 UHS-II SD Card Reader (MRW-S1/T1) is a compact SD card reader for standard SD, SDHC, SDXC cards that supports UHS-I and UHS-II. It was announced in early 2017 alongside the Sony G Series UHS-II SD cards.

The S1 reader consists of a grey plastic case that measures about 2 1/4 by 1 1/4 by 7/16 inches. A removable snap-on plastic cap covers the USB port. On the opposite end is a single SD card slot. About 7/8 inch of the card inserts into the slot, leaving about 3/8 inch of card outside the reader. Cards insert easily and smoothly into the reader.

There is no card access light. The standard USB 3.1 Gen 1 Type-A connector fits USB 3.0 prts. The reader is backwards compatible with USB 2.0, although its speed will be limited.

Sony MRW-S1 UHS-II SD Card Reader Top

The reader tested is marked "Made in Taiwan." The Sony MRW-S1 has a 1 year warranty. Supported operating systems include Windows 7 (SP1), Windows 8.1 and Windows 10, as well as Mac OS X 10.9 or later. The UPC code is 027242906235.

Sony MRW-S1 UHS-II SD Card Reader Bottom

Performance

The Sony S1 reached the speed using Sony SF-G Series UHS-II cards. The highest benchmark reached 301.6 MB/s sequential read speed. Sequential write speed topped out at 273.1 MB/s also with G Series cards. Benchmarks of UHS-I cards provided read speeds up to 99.3MB/s, and write speeds up to 92.6 MB/s.

The S1 reader has no microSD slot, so microSD cards were tested in an adapter. UHS-II microSD cards were tested using a UHS-II microSD to SD adapter.

Reader: Sony S1 High Speed UHS-II Reader/Writer
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

Sony S1 High Speed UHS-II Reader/Writer
Card Benchmarks
TypeSequential
Read
(MB/s)
Sequential
Write
(MB/s)
Sony SF-G 300MB/s UHS-II 32GBSD301.575272.818
Sony SF-G 300MB/s UHS-II 64GBSD298.315273.138
Sony SF-G 300MB/s UHS-II 128GBSD295.874272.393
Transcend Ultimate UHS-II U3 64GBSD278.358176.276
Lexar Professional 2000x UHS-II 32GBSD278.285263.793
Sony M Series UHS-II 32GBSD277.364114.311
SanDisk Extreme Pro 280MB/s UHS-II 32GBSD276.450230.659
Transcend Ultimate UHS-II U3 32GBSD276.268177.409
Lexar Professional 2000x UHS-II Rev E 32GBSD274.532261.100
Panasonic MicroP2 UHS-II 32GBSD272.99649.769
SanDisk Extreme Pro 300MB/s UHS-II 128GBSD272.747225.840
Delkin 1900x UHS-II 32GBSD272.71250.412
SanDisk Extreme Pro 300MB/s UHS-II 64GBSD272.110225.065
Lexar Professional 2000x UHS-II Rev B 128GBSD272.039223.482
Sony M Series UHS-II 128GBSD271.93493.874
Lexar Professional 2000x UHS-II 64GBSD271.581259.164
SanDisk Extreme Pro 300MB/s UHS-II 32GBSD271.406224.510
Hoodman Steel UHS-II 64GBSD271.125177.951
Lexar Professional 1800x microSD UHS-II 32GBmicroSD271.020226.303
Lexar Professional 1800x microSD UHS-II 64GBmicroSD269.384225.210
Sony M Series UHS-II 64GBSD267.83694.705
SanDisk Extreme Pro UHS-II 275MB/s microSDXC 64GBmicroSD266.644106.878
Lexar Professional 1800x microSD UHS-II 128GBmicroSD266.035107.756
Lexar Professional 2000x UHS-II Rev E 64GBSD266.001259.036
Toshiba Exceria Pro UHS-II 32GBSD259.967228.100
Lexar Professional 1000x UHS-II Rev C 64GBSD166.414111.503
Lexar Professional 1000x UHS-II 256GBSD155.62185.174
Lexar Professional 1000x UHS-II Rev C 128GBSD154.79486.331
Lexar Professional 1000x UHS-II 32GBSD154.31687.637
Lexar Professional 1000x UHS-II Rev B 32GBSD154.24885.236
Lexar Professional 1000x UHS-II 64GBSD152.92183.960
Lexar Professional 1000x microSD UHS-II 32GBmicroSD151.46352.356
Lexar Professional 1000x UHS-II microSD 64GBmicroSD151.02653.997
Lexar Professional 1000x UHS-II 128GBSD149.51985.008
Lexar Professional 1000x UHS-II microSD 128GBmicroSD149.22158.929
SanDisk Extreme 100MB/s A1 microSDHC 32GBmicroSD99.29771.707
SanDisk Extreme 90MB/s U3 V30 128GBSD99.29766.127
SanDisk Extreme Plus 90MB/s U3 V30 32GBSD99.29766.989
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDHC 32GBmicroSD99.29791.379
SanDisk Extreme Plus 90MB/s U3 V30 64GBSD99.28865.499
SanDisk Extreme Plus 100MB/s A1 microSDHC 32GBmicroSD99.28891.419
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 64GBmicroSD99.28892.239
SanDisk Extreme 90MB/s U3 V30 64GBSD99.28854.109
SanDisk Extreme Plus 95/90 MB/s U3 V30 microSDXC 128GBmicroSD99.27890.637
SanDisk Extreme 90MB/s U3 V30 32GBSD99.27853.947
SanDisk Extreme Pro 95MB/s microSDHC 32GBmicroSD99.27891.827
SanDisk Extreme Pro 95MB/s microSDXC 64GBmicroSD99.27892.565
SanDisk Ultra 80MB/s 128GBSD99.26940.237
SanDisk Extreme 100MB/s A1 microSDXC 64GBmicroSD99.26972.336
SanDisk Extreme Plus 100MB/s A1 microSDXC 128GBmicroSD99.25990.794
SanDisk Extreme 100MB/s A1 microSDXC 128GBmicroSD99.23164.117
SanDisk Extreme Plus 100MB/s A1 microSDXC 64GBmicroSD99.23190.645
SanDisk Extreme 90MB/s U3 V30 microSDXC 64GBmicroSD99.23170.181
SanDisk Extreme Pro 95MB/s U3 V30 64GBSD99.23190.864
SanDisk Extreme Pro 95MB/s U3 V30 32GBSD99.21290.715
SanDisk Extreme Pro 95MB/s U3 V30 256GBSD99.21289.898
SanDisk Extreme Pro 95MB/s U3 V30 128GBSD99.21291.093
SanDisk Extreme 90MB/s U3 V30 microSDHC 32GBmicroSD99.20370.931
SanDisk Ultra 80MB/s 32GB Card 2SD99.19420.927
SanDisk Extreme 90MB/s U3 V30 microSDXC 128GBmicroSD99.18464.350
SanDisk Ultra 80MB/s microSD 128GBmicroSD99.17555.492
SanDisk Ultra 80MB/s microSD 64GBmicroSD99.13720.495
SanDisk Extreme 90MB/s U3 V30 256GBSD99.10964.819
Kingston U3 90/80 MB/s 64GBSD98.05386.274
Kingston U3 90/80 MB/s 256GBSD98.04487.637
PNY Elite microSDXC 64GBmicroSD98.04432.491
Kingston Class 10 UHS-I 64GBSD98.04470.970
Kingston U3 90/80 MB/s 32GBSD98.03489.233
PNY Pro Elite microSDXC 64GBmicroSD98.02577.090
Panasonic Gold 95/90 64GBSD98.00776.382
Kingston U3 (90/80) microSD 64GBmicroSD97.99874.850
Lexar Professional 633x U1 32GBSD97.99822.002
Lexar Professional 633x U1 64GBSD97.96128.641
Lexar Professional 633x microSDXC 64GBmicroSD97.96128.771
Transcend 95/60 MB/s U3 128GBSD97.92565.016
Sony Ultra-High Durability Professional 64GBSD97.90676.138
Transcend 600x 64GBSD97.89764.031
PNY Elite Performance U3 128GBSD97.88869.131
Transcend 600x 128GBSD97.87968.508
PNY Elite microSDXC 128GBmicroSD97.86130.468
Patriot EP PRO microSDXC 64GBmicroSD97.86177.147
Transcend 633x microSDHC 32GBmicroSD97.85188.690
Transcend 95/60 MB/s U3 64GBSD97.85166.623
Transcend Ultimate 633x microSD 64GBmicroSD97.82487.608
PNY Pro Elite 64GBSD97.82475.606
PNY Elite Performance U1 64GBSD97.81566.920
Transcend 95/85 MB/s U3 32GBSD97.81588.802
Transcend 600x 32GBSD97.81538.928
PNY Elite Performance U1 32GBSD97.81538.181
Transcend R95 W85 U3 64GBSD97.80681.792
PNY Elite-X microSDXC 64GBmicroSD97.80671.707
Transcend 95/60 MB/s U3 256GBSD97.79767.117
PNY Elite-X microSDHC 32GBmicroSD97.78876.869
Sony 95MB/s U3 64GBSD97.78887.192
Lexar Professional 633x U1 128GBSD97.77829.973
PNY Elite Performance U3 256GBSD97.77853.510
Sony 95MB/s U3 32GBSD97.76086.918
Samsung PRO U3 32GBSD97.74279.794
Samsung PRO Plus 64GBSD97.73389.157
Lexar Professional 633x U3 256GBSD97.72469.040
Samsung PRO Plus 32GBSD97.67887.586
Samsung PRO Select microSDXC 64GBmicroSD97.67888.847
Samsung PRO U3 64GBSD97.63378.781
Samsung PRO microSDXC 64GBmicroSD97.61579.516
Samsung PRO Plus microSDXC 64GBmicroSD97.61588.331
Samsung EVO Select microSDXC 64GBmicroSD97.47825.847
Patriot EP Pro 90MB/s 64GBSD97.28941.397
Patriot EP Pro 128GBSD97.28942.471
Delkin Elite 633x 32GBSD97.12680.179
Delkin Black 32GBSD97.10880.123
Kingston U3 (90/80) microSD 32GBmicroSD96.99285.459
PNY Elite Performance U3 64GBSD96.54564.204
Kingston Ultimate 32GBSD95.43846.101
Samsung PRO Plus microSDXC 128GBmicroSD94.79184.932
Samsung PRO Select microSDXC 128GBmicroSD94.73984.926
SanDisk Ultra 80MB/s 32GBSD93.99242.848
SanDisk Ultra 90MB/s microSD 200GBmicroSD91.39517.148
Lexar Professional 633x microSDXC 200GBmicroSD90.50436.872
Kingston Class 10 256GBSD90.36344.702
SanDisk Ultra 80MB/s 64GBSD83.30615.383
Lexar Professional 633x microSDXC 128GBmicroSD82.66922.612
SanDisk Ultra 80MB/s microSD 32GBmicroSD82.25415.766
Samsung EVO Select microSDXC 128GBmicroSD81.57022.159
Samsung EVO Plus 128GB microSDXCmicroSD81.50622.284
Patriot EP Pro 90MB/s 32GBSD78.07741.111
Samsung EVO microSDXC 64GBmicroSD46.56623.206
Samsung EVO microSD 32GBmicroSD46.43223.925
Sony MRW-S1 UHS-II SD Card Reader Package Front Sony MRW-S1 UHS-II SD Card Reader Package Back

Compare prices on the card reader. The lowest prices are highlighted in the table below.

Card ReaderConnectionModel NumberPrices
AmazonB&H PhotoAdorama
Sony S1 High Speed UHS-II Reader/WriterUSB 3.1 Type-AMRW-S1$29.97$28.99