What is the difference between the GFR304SD and the RDF5?

The price is the biggest difference. As for practical use, it is really dependent on the speed of your SDxx card. Cards rated for 45+ MBS will really benefit from this. Below 35 MBS maybe not so much. Either reader will be fine in my opinion. My IOGEAR gets warm on big transfers, not hot, but there's a lot of electrons moving thru it! And they're both inexpensive so buy two because failure is inevitable. Best part of my purchase was buying higher speed SD cards: my camera wrote files very noticeably faster! Stop looking at specs. Get either one with a matching high speed SD card and enjoy the speed. (Brevity is not my strongest point, apologies.)

What's the maximum data transfer speed of this card reader?

The maximum data transfer speed of this card reader is 5Gbps.

What does the product package include?

The product package includes 1 x SuperSpeed USB 3.0 SD / MicroSD Card Reader / Writer, 1 x Quick Start Guide, and 1 x Warranty Card.

Is this device compatible with MicroSD cards?

Yes, this device is compatible with microSD cards.

Does this card reader require an external power supply to operate?

No, this card reader does not require an external power supply to operate.

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IOGEAR GFR304SD USB 3.0 SuperSpeed SD/ SDHC/ MMC/ SDXC/ MicroSD/ MicroSDXC/ Extreme SD Cards Reader / Writer

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USB 3.0 SuperSpeed
Supports SD/MMC/SDXC Cards
Compact Design for Easy Mobility
USB Powered - NO External A/C Adapter Required

Overview

Specs

Reviews (28)

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SUPER SPEED SD/MICROSD CARD READER/WRITER USB 3.0

Model
Brand	IOGEAR
Model	GFR304SD

Details
Type	Flash Reader
Installation Type	External
Color	Black
Interface	USB 3.0
Compatibility	Supporting Media List: SD/SDHC: SD, SDHC, SDXC, MicroSDXC, SD-Pro, SD-Pleomax, SD-Pro C, Ultra II SD, Ultra II Plus SD, SD-Extreme III, SD-Ultra X, SD-Turbo, SD-Supper, SD Max, Mini SD, Mini SD-Pro, Mini SD-Pleomax, MMC, MMC-Pleomax, MMC Pro, HS-MMC, MMC Plus, MMC-Plus Turbo, RS MMC, RS MMC-Pleomax, RS MMC-Speed, RS MMC-Max, MMC Mobile, MMC Mobile-ProC, MMC Mobile-Pocketnet, MMC Micro* microSD / microSDHC: microSD / microSDHC, T-Flash * Adapter required.
Support - Compact Flash	No
Support - Memory Stick	No
Support - MMC	Requires Card
Support - SD	Yes
Dimensions	2.5" x 0.8" x 0.4"

Features
Features	USB 3.0 High Speed data transfer rate up to 5Gbps Supports memory card types including SD / MMC Supports for SDXC cards Compact design for easy mobility Bus powered - NO external AC adapter required Requirements: PC: Windows XP, Windows Vista, and Windows 7 Available USB port (USB 3.0 port for SuperSpeed mode) Mac: Compatible with USB 2.0 and 1.1

Packaging
Package Contents	1 x SuperSpeed USB 3.0 SD / MicroSD Card Reader / Writer 1 x Quick Start Guide 1 x Warranty Card

Additional Information
First Listed on Newegg	December 14, 2011

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 3 years
Limited Warranty period (labor): 3 years
Read full details

Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by Newegg.com's 30-Day Return Policy.
Read full return policy for details.

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IOGEAR GFR304SD USB 3.0 SuperSpeed SD/ SDHC/ MMC/ SDXC/ MicroSD/ MicroSDXC/ Extreme SD Cards Reader / Writer

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Customer Reviews of the IOGEAR GFR304SD

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: N82E16820283018

Best Sellers

IOGEAR GFR304SD USB 3.0 SuperSpeed SD/ SDHC/ MMC/ SDXC/ MicroSD/ MicroSDXC/ Extreme SD Cards Reader / Writer

Learn more about the IOGEAR GFR304SD

Customer Reviews of the IOGEAR GFR304SD

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info