Subscribe to Our Youtube Channel
Related Manuals for UUGear Zero4U
Summary of Contents for UUGear Zero4U
- Page 1 Zero4U 4-Port USB Hub for Raspberry Pi Zero User Manual (revision 1.20) Copyright © 2017 UUGear s.r.o. All rights reserved.
-
Page 2: Table Of Contents
Package Content ....................3 Specifications ....................... 4 About Powering Mode ..................5 Self-Power Mode ..................5 Bus-Power Mode ..................5 Usage Guide ......................6 Troubleshooting: USB Hub Not Recognized ............9 Revision History ....................11 Copyright © 2017 UUGear s.r.o. All rights reserved. -
Page 3: Product Overview
Product Overview Zero4U is a 4-Port USB hub designed for Raspberry Pi Zero. It extends the only data micro USB port on Raspberry Pi Zero and gives you 4 standard USB ports, which allows you to connect more USB devices to your Raspberry Pi Zero. - Page 4 Reversion 1 (for V1.2 and V1.3) Reversion 2 (for V1.3 only) 1~4) Downstream USB ports 5~8) White LEDs as activity indicators 9) Two pogo pins at back for data connection 10) Alternative DC 5V power in 11) Two pogo pins at back for power connection 12) Blue LED as power indicator 13) Upstream mini USB port...
-
Page 5: Package Content
Package Content Each package of this USB hub contains: 4-port USB hub board x 1 Plastic spacer x 4 M2.5 x 10mm screws x 4 M2.5 nuts x 4 Ferrite Ring x 1 (for V1.3 only) -
Page 6: Specifications
Self-Power: maximum 2A for all ports Static Current ~1mA Operating Temperature 0℃~70℃ Storage Temperature -20℃~80℃ Humidity 0~80%RH, no condensing Remarks: when using Zero4U with Raspberry Pi Zero, Ethernet gadget should be disabled, or the USB hub could not be recognized. -
Page 7: About Powering Mode
About Powering Mode A USB hub could be powered by the USB bus (bus-power mode), or be powered by the power supply (self-power mode). Bus-power mode is simpler as it does not need to have external power supply, but it has quite limited ability to power the devices on the USB hub. -
Page 8: Usage Guide
Raspberry Pi Zero and the USB hub are powered. If you plug a USB device into any of the 4 USB ports, the port activity LED (white) will light If you want to use Zero4U on Raspberry Pi Zero W, only the Zero4U for V1.3 has the possibility, as the positions for PP1, PP6, PP22 and PP23 testing pads are the same for Raspberry Pi Zero V1.3 and Raspberry Pi W. - Page 9 The picture below shows how to mount Zero4U on Raspberry Pi Zero W, with the ferrite ring between them. Remarks: this USB hub has only one transaction translator (TT) for all downstream USB ports. Please try not to connect any USB 1.1 device to the USB hub; otherwise all devices on the hub will be slowed down to the USB 1.1 speed (12 Mbps).
- Page 10 In the picture, the power supply is connected to Raspberry Pi, and the USB hub is powered by the USB bus. This will limit the output current to 500mA for all USB ports on the hub. If you also connect an alternative power supply to the USB hub (via the white connector on board), the USB hub will work in self-power mode and it can output up to 2A current for USB ports.
-
Page 11: Troubleshooting: Usb Hub Not Recognized
By default, the USB port is in host mode, which allows you to connect Zero4U (a USB hub) to it; If you enable the Ethernet Gadget, the USB port is in slave mode, and the connected Zero4U will not be recognized. - Page 12 “ID” signal pin connected to the GND pin internally, which explicitly disables the Ethernet Gadget and lets the USB port on Raspberry Pi Zero to stay in host mode, that way Zero4U could be recognized successfully. Please notice that, shorting ID pin to ground can override the software configuration.
-
Page 13: Revision History
Revision History Revision Date Description 1.00 2016.04.04 Initial revision Update pictures for second revision of Zero4U v1.3 1.10 2017.01.23 Add troubleshooting of “hub not recognized” issue. 1.20 2017.03.21 Add description for the newly added ferrite ring.
Need help?
Do you have a question about the Zero4U and is the answer not in the manual?
Questions and answers