BIG7 is a 7-Port MTT USB hub designed for Raspberry Pi. It extends one USB port on Raspberry Pi to 7 usable USB ports, which allows you to connect much more USB devices to your Raspberry Pi. Since reversion 2 (Rev 2) the power of USB ports could be controlled by software or external switch (note: it is not Per-Port Power Switching (PPPS), please read the user manual to learn how it works).
This USB hub is compatible with all versions of Raspberry Pi, including the old A/B model, A+/B+ model, compute module (with development kit), Raspberry Pi 2 (B model), Raspberry Pi Zero and Raspberry Pi 3 (B and B+ model).
The board size of this USB hub is the same with Raspberry Pi B+ or Raspberry Pi 2/3 (B model). The old Raspberry Pi A and B model also have the same size, except that they don’t have those rounded corners. This USB hub has 6 mounting holes at correct positions and could be mounted under any Raspberry Pi model except the compute module.
If you want to use BIG7 on Raspberry Pi 4, you can not use pogo pin to connect the D+ and D-, and you need to use mini USB cable to connect BIG7 to Raspberry Pi 4’s USB 2.0 port, also move the power link jumper to the left. You can also connect BIG7 to the USB 3.0 port, but BIG7 will still work as a USB 2.0 hub. The same appllies to Raspberry Pi 5.
For different models of Raspberry Pi, this USB hub uses different approaches to (optionally) back-power the Raspberry Pi, which significantly simplifies your wiring and allows you to power both the USB hub and Raspberry Pi with only one power supply. If you are using Raspberry Pi B+, 2B, 3B or 3B+, BIG7 can make both power and USB data connection to your Raspberry Pi without using a USB cable, which is very neat:
Each package of this USB hub contains:
- 7-port USB hub board x 1
- Cupped head pogo pin x 4
- M2.5 x 10+6mm copper standoff x 4
- M2.5 screws x 4
- M2.5 nuts x 4
Notice: since Rev2, the short USB cable is no longer included in the package. More details can be found here.
Dimension: 85mm x 56mm x 10mm
Weight: 28g (net weight without any accessory)
Power Mode: Bus-Power / Self-Power
Standards: USB 2.0 and 1.1 compatibility, Multiple Transaction Translator (MTT)
Working Voltage: 5V DC
Static Current: 4mA
Maximum Output Current: 3A for all ports in self-power mode, 500mA for all ports in bus-power mode
Operating Temperature: 0°C~70°C
Storage Temperature: -20°C~60°C
Humidity: 0~80%RH, no condensing