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E-Films MxR Extreme Expresscard Adapter

BH #EFEMRCR • MFR #EF-1701
20 reviews
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E-Films MxR Extreme Expresscard Adapter
Key Features
  • For Sony EX1/EX3/EX1R/PMW-350
  • Replaces Sony SxS Pro
  • Includes Case
  • Speeds Up Downloads
This E-films MxR Extreme Expresscard Adapter is a USB Expresscard for the Sony EX1/EX3/EX1R/PMW-350. Supporting all brands and sizes of SDHC/SDXC and UHS interface memory, the MxR Extreme is designed as a replacement for the Sony SxS Pro for the aforementioned range of Sony EX cameras. By speeding up downloads and providing 'flawless' recording from 1-60 frames per second, the MxR efficiently writes data to the inserted SD card.
More Details
Temporarily Out of Stock
Expected availability: Jun 09, 2026
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$53.53
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E-Films EF-1701 Overview

This E-films MxR Extreme Expresscard Adapter is a USB Expresscard for the Sony EX1/EX3/EX1R/PMW-350. Supporting all brands and sizes of SDHC/SDXC and UHS interface memory, the MxR Extreme is designed as a replacement for the Sony SxS Pro for the aforementioned range of Sony EX cameras. By speeding up downloads and providing 'flawless' recording from 1-60 frames per second, the MxR efficiently writes data to the inserted SD card.

MxR Extreme Expresscard Adapter for Sony EX1/EX3/EX1R/PMW-350
The E-film MxR Extreme is a custom designed and purpose built USB Expresscard that supports all brands and sizes of SDHC/SDXC including the very latest UHS interface memory
What Does it Do?
  • Replaces SxS Pro: The E-films MxR Extreme adapts SDHC/SDXC and UHS memory to replace Sony SxS Pro memory in the Sony range of EX cameras
  • Speeds up downloads: Downloading UHS based memory to computer using the E-films MxR Extreme is 35+ megabytes per second in a real world environment, and compare favorably to SxS which is approximately 75 megabytes per second
  • All under/overcranking speeds supported: Recording is flawless from 1-60 frames per second, the same as SxS Pro
  • Unlimited recording: Sony realeased a 64GB SxS-1 Pro card, which is surpassed by the combination of the E-film MxR Extreme and the Lexar 128GB card
How Does the E-Films MxR Extreme Do This?
It intercepts USB activity from the camera and converts that data stream, writing it to the SD card on the fly. It is so efficient at this conversion process, that it can convert even the highest speed overcranking of 60fps onto modest performing SD cards without a problem
Are There Any Risks Associated with Using SD Cards of Such Large Size?
There are always risks associated with using flash memory of any kind. And there were also risks to using tapes in the past. But the same applies now and then. Always ensure you are using well known and recommended brands and products. Test them before an important shoot, and carefully secure the media after the shoot
What Memory is the E-Films MxR Extreme Compatible With?
The E-Films MxR Extreme is guaranteed to be compatible with any SDHC, SDXC, and UHS memory cards that adhere to the SD Association Standards. SD cards that E-films has tested are listed below. Other brands not listed will work with the MxR Extreme, but they have not been tested, and E-films does not have an opinion on them

SDXC - 64GB
Sandisk 64GB SDXC Class 4
Transcend 64GB SDXC Class 10
Verbatim 64GB SDXC UHS-1
Kingston 64GB SDXC UHS-1
Toshiba 64GB SDXC UHS-1
Panasonic 48GB SDXC
Panasonic 64GB SDXC

SDHC - 32GB
Sandisk Extreme Pro UHS - 1
ATP Pro Max Class 10
Silicon Power Class 10
Photofast Class 10
Transcend Class 10
A-RAM Class 10
Delkin Class 10
Integral Class 10
Veho Class 6

SHDC - 16GB
Sandisk Extreme Pro UHS-1
ATP Pro Max Class 10
Silicon Power Class 10
Photofast Class 10
Transcend Class 10
A-RAM Class 10
Delkin Class 10
Integral Class 10
Veho Class 6

Please Note! The latest firmware versions for your camera are required for use

UPC: 013189952725

E-Films EF-1701 Specs

USB
USB 2.0 high-speed interface
Fully complies with SD specification 2.0 (backward compatible to SD1.1/1.01/1.0), SDHC card can be supported from 8-32GB
Fully complies with SD specification 3.0
Capacity
Extends capacity of SD memory card (SDXC): more than 32GB up to 2TB
Supports
Supports SDXC/UHS-1 including SDR12, SDR25, SDR50, SDR104 speeds
Operating Voltage
+5.0 to +3.0V (+/-5% wide range power supply)
Environment
Operating temperature: 32 to 158°F / 0 to 70°C
Operating humidity: 20 to 85%
System Requirements
Windows XP, Visa, 7
Mac 10.X
Packaging Info
Package Weight
0.07 lb
Box Dimensions (LxWxH)
4.35 x 4.35 x 0.85"

E-Films EF-1701 Reviews

Very good, no issues

By Alan
Rated 5 out of 5
Date: 2024-05-15

I'm using it in the Sony Z-280 with Prograde v90 cards. I use this when we're shooting 1080p content and the adapter has been solid. Everything records smoothly. I will probably get another one to have as a backup.

Dosen't work to my Sony PXW-X160

By Gentjan L.
Rated 1 out of 5
Date: 2015-06-24

This product does not work on my camera sony pxw-x160, Unknown media ....

See any errors on this page?

It works with Sony PXW-Z280

It works with Sony PXW-Z280
Asked by: Jorge
Yes, the E-Films MxR Extreme Expresscard Adapter is compatible with the Sony PXW-Z280 4K 3CMOS 1/2" Sensor XDCAM Camcorder.
Answered by: Jonathan S
Date published: 2026-04-12

can this product be used with Sandisk extreme pro ...

can this product be used with Sandisk extreme pro SDXC 128GB?
Asked by: Alban
The E-Films MxR Extreme Expresscard Adapter will work with your SDXC card with no problems.
Answered by: Elliot
Date published: 2024-08-29

question

Will this work with the PMW-300K1?
Asked by: Terrance M.
Yes, the E-Films MxR Extreme Expresscard Adapter B&H # EFEMRCR will work with the Sony PMW-300K1.
Answered by: Dennis A L.
Date published: 2018-08-28

question

how al can get the new fireware for mi camara sony EX1 -R to makes work mi MxR Extreme Expresscard adapter. I have by it.
Asked by: Anonymous
Firmware updates are free. Following is the link you need to update your firmware so you can use the two together:https://www.servicesplus.sel.sony.com/sony-software-PMWEX1R.aspx
Answered by: Jeremy L.
Date published: 2018-08-28

Does this work on Sony F5 or F55?

Does this work on Sony F5 or F55?
Asked by: John
No, unfortunately the E-Films MxR Extreme Expresscard Adapter is not compatible with the Sony F5 or the Sony F55.
Answered by: Paige K
Date published: 2023-06-07

question

Hi, Is this product compatible with SanDisk 64 GB SDXC Memory Card Extreme Pro Class 10 UHS-I on Sony PMW-EX3Thanks,
Asked by: Anonymous
Yes, The MxR adapter will support the following 64GB memory cards when used with the following camera models. Sony EX1/EX3/EX1R/PMW-350Compatable 64GB memory cards.SDXC - 64GBSandisk 64GB SDXC Class 10Transcend 64GB SDXC Class 10 Verbatim 64GB SDXC UHS-1 Kingston 64GB SDXC UHS-1 Toshiba 64GB SDXC UHS-1 Panasonic 48GB SDXC Panasonic 64GB SDXC
Answered by: Chris H.
Date published: 2018-08-28

question

Hi! Is this product compatible with Sony PXW-X160?
Asked by: Gentjan L.
Yes it is.
Answered by: Daniel W.
Date published: 2018-08-28

question

Hi,Is this product compatible with Lexar SDHC memory card class 10?
Asked by: Anonymous
It should be. I know it works with Lexar sdXc memory cars class 10 as I am using them currently.
Answered by: Benjamin C.
Date published: 2018-08-28
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