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SuperTT Dongle
User Manual
SuperTT Dongle
EPU3D02ARSM
2013-12-27
Revision 0.85
EverPro Technologies Company Ltd.
www.everprotech.com
EverPro (Beijing) R&D Center
VIA Building, Tsinghua Science Park Building 7
Haidian District Beijing, China 100084
Email：[email protected]
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SuperTT Dongle
1. Introduction
EPU3D02ARSM is a new-generation USB 3.0 dongle integrated with U3TT
technology designed by VLI Beijing System Product Division. EPU3D02ARSM can
convert the USB 2.0/1.1/1.0 devices connected on the downstream port to USB 3.0
devices, allowing these USB 2.0/1.1/1.0 devices to use the upstream SuperSpeed signal
path. EPU3D02ARSM can use only SuperSpeed path on the upstream facing port when
connected to USB 3.0 host, so it is easy to use Active Optical Cable (AOC) to extend the
transmission distance of USB 2.0/1.1/1.0 devices to more than 100 meters.
Feature List
• The downstream and upstream ports are compatible with USB 3.0 standard
• Plug & Play support
• No need for driver
• Single 5Vpower supply, self-power
• Downstream and upstream port with USB 3.0 Standard-A receptacle
• Upstream port supports USB 3.0 AOC and active power supply for USB 3.0 AOC
• Upstream port can connect to USB 2.0/3.0 host/hub
• Downstream port supports USB 3.0/ 2.0 devices/hubs
• In system firmware upgrading support
• Energy-saving mode supported
• Double-color LED for state indication
2. Product Specification
Port Definition
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SuperTT Dongle
1. USB 3.0 downstream facing port
2. USB 3.0 upstream facing port
3. 5V DC Jack
4. Dongle status double color LED
3. Hardware Setup
EPU3D02ARSM can be powered by external DC only. The external DC adaptor
should have capacity to provide more than 1.2 amperes.
The upstream port should be connected to the host/hub using standard A-A USB
3.0 cable or AOC.
1) Connect USB device to dongle downstream port.
2) If the USB device is self-powered, connect the external power of the
device.
3) Connect the standard USB 3.0 A-A cable to the USB 3.0 host (or hub).
4) Connect the standard USB 3.0 A-A cable to the upstream port of the
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SuperTT Dongle
dongle.
5) Connect the external +5V DC power of the dongle.
Notes: the sequence of the steps is irrelevant.
4. Troubleshooting Guide
1. Device could not be enumerated by host
Checking items listed below to clear this issue.
a. Check your hardware, make sure it is setup as described in this guide
b. Check if USB 3.0 hub and USB 2.0 hub have been enumerated
c. Check your USB device and host, make sure they works normally
d. Check the power, make sure the voltage is 5V and the green LED of
the corresponding port is off
e. Check the self-powered USB device power, make sure it is turn on
f. Re-power the dongle, make sure the red LED flash twice. If not, the
firmware or hardware may be broken.
2. Device does not work in USB 3.0 Mode
a. Check you host, make sure it is a USB 3.0 host and is not disabled
b. Check your cable between host and dongle, make sure it is a qualified
USB 3.0 cable
c. Check the USB Hub between host and dongle, make sure it is a USB
3.0 Hub and is not disabled
d. Check if the USB 3.0 hub and USB 2.0 hub has been enumerated by
the host
5. Frequently Asked Questions (FAQs)
• Q: Can I connect USB 3.0 device on the downstream port?
A: Yes. If you connect USB 3.0 device on the downstream port, the
SuperSpeed signals will not transmit through the SuperTT but directly to the
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USB 3.0 hub IC.
• Q: What should I do if the devices are very far away from the host?
A: If the distance between the devices and host is more than 7m, it highly
recommended using AOC on the upstream port. The length of AOC can be up
to 100m.
• Q: How should I choose the adapter for EPU3D02ARSM?
The DC adopter should have the capacity to output more than 1.2 amperes to
provide enough power on the downstream port. Otherwise some power
hungry devices such as USB hard disk diver will not function properly.
EverPro Technologies Company Ltd.
www.everprotech.com
Copyright © 2014 EverPro Technologies Company Ltd. All Rights Reserved.
No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise without the prior written permission of
EverPro Technologies Company Ltd. The material in this document is for information only and
is subject to change without notice. EverPro Technologies Company Ltd. reserves the right to
make changes in the product design without reservation and without notice to its users.
All trademarks are the properties of their respective owners.
No license is granted, implied or otherwise, under any patent or patent rights of EverPro
Technologies Company Ltd. EverPro Technologies Company Ltd. makes no warranties, implied
or otherwise, in regard to this document and to the products described in this document. The
information provided by this document is believed to be accurate and reliable as of the
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SuperTT Dongle
publication date of this document. However, EverPro Technologies Company Ltd. assumes no
responsibility for any errors in this document. Furthermore, EverPro Technologies Company Ltd.
assumes no responsibility for the use or misuse of the information in this document and for
any patent infringements that may arise from the use of this document. The information and
product specifications within this document are subject to change at any time, without notice
and without obligation to notify any person of such change.
NOTE:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.
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