Name: Zero4U - 4 Port USB Hub for Raspberry Pi Zero v1.3
Brand: Adafruit
SKU: 3298

Logical pinout · physical placement not verified

PP1 pogo contact
Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.
Type · PowerVoltage · 5V USB power path, working voltage stated as 5V DC on the Adafruit product page.
PP6 pogo contact
Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.
Type · GroundVoltage · Ground return for Raspberry Pi Zero USB/power test-pad interface.
PP22 pogo contact
Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP22 as one of the four pogo-pin contacts.
Type · SignalVoltage · USB 2.0 signalling on the Pi Zero test-pad interface.
PP23 pogo contact
Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP23 as one of the four pogo-pin contacts.
Type · SignalVoltage · USB 2.0 signalling on the Pi Zero test-pad interface.
JST XH2.54 power input
Alternative power input connector; Adafruit states the USB hub normally takes power from the Pi Zero but can use the JST XH2.54 connector as an alternative power input port.
Type · PowerVoltage · 5V DC working voltage; max output current stated as 2A total in self-power mode.
Mini-USB upstream port
Upstream USB connection when using the hub with other computers; Adafruit states a USB cable can connect the onboard mini-USB port to the upstream USB port.
Type · SignalVoltage · USB 2.0/1.1 host interface.
USB downstream ports
Four downstream USB hub ports; Adafruit describes the product as a 4-port USB hub with USB 2.0 and 1.1 compatibility.
Type · SignalVoltage · 5V USB downstream power; 500mA total in bus-power mode or 2A total in self-power mode per Adafruit technical details.

Pin	Type	Function	Voltage
PP1 pogo contact	Power	Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.	5V USB power path, working voltage stated as 5V DC on the Adafruit product page.
PP6 pogo contact	Ground	Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.	Ground return for Raspberry Pi Zero USB/power test-pad interface.
PP22 pogo contact	Signal	Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP22 as one of the four pogo-pin contacts.	USB 2.0 signalling on the Pi Zero test-pad interface.
PP23 pogo contact	Signal	Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP23 as one of the four pogo-pin contacts.	USB 2.0 signalling on the Pi Zero test-pad interface.
JST XH2.54 power input	Power	Alternative power input connector; Adafruit states the USB hub normally takes power from the Pi Zero but can use the JST XH2.54 connector as an alternative power input port.	5V DC working voltage; max output current stated as 2A total in self-power mode.
Mini-USB upstream port	Signal	Upstream USB connection when using the hub with other computers; Adafruit states a USB cable can connect the onboard mini-USB port to the upstream USB port.	USB 2.0/1.1 host interface.
USB downstream ports	Signal	Four downstream USB hub ports; Adafruit describes the product as a 4-port USB hub with USB 2.0 and 1.1 compatibility.	5V USB downstream power; 500mA total in bus-power mode or 2A total in self-power mode per Adafruit technical details.

Logical pinout · physical placement not verified

Pin details

7 connections

PP1 pogo contact
Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.
PowerVoltage · 5V USB power path, working voltage stated as 5V DC on the Adafruit product page.
PP6 pogo contact
Raspberry Pi Zero test-pad contact used by the Zero4U back-to-back mount; Adafruit states the four pogo pins connect to PP1, PP6, PP22 and PP23 with no soldering required.
GroundVoltage · Ground return for Raspberry Pi Zero USB/power test-pad interface.
PP22 pogo contact
Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP22 as one of the four pogo-pin contacts.
SignalVoltage · USB 2.0 signalling on the Pi Zero test-pad interface.
PP23 pogo contact
Raspberry Pi Zero USB test-pad contact used by the Zero4U back-to-back mount; Adafruit identifies PP23 as one of the four pogo-pin contacts.
SignalVoltage · USB 2.0 signalling on the Pi Zero test-pad interface.
JST XH2.54 power input
Alternative power input connector; Adafruit states the USB hub normally takes power from the Pi Zero but can use the JST XH2.54 connector as an alternative power input port.
PowerVoltage · 5V DC working voltage; max output current stated as 2A total in self-power mode.
Mini-USB upstream port
Upstream USB connection when using the hub with other computers; Adafruit states a USB cable can connect the onboard mini-USB port to the upstream USB port.
SignalVoltage · USB 2.0/1.1 host interface.
USB downstream ports
Four downstream USB hub ports; Adafruit describes the product as a 4-port USB hub with USB 2.0 and 1.1 compatibility.
SignalVoltage · 5V USB downstream power; 500mA total in bus-power mode or 2A total in self-power mode per Adafruit technical details.

Start wiring

USB · Ethernet

Confirm the data interface matches your host board.

Module pins: PP1 pogo contact, JST XH2.54 power input, PP6 pogo contact. Schematik maps them to your board in the app.

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