This is a 3rd Gen! A Form Fitting USB Hub for Raspberry Pi ZeroRaspberry Pi Zero only comes with a single micro USB (OTG) port, forcing you to use a traditional USB HUB if you want to connect multiple USB peripherals to it. The whole set is bulky and inconvenient to carry around.The Stackable USB Hub for Raspberry Pi Zero is the perfect way to expand the connectivity of the Raspberry Pi Zero and add keyboards, mice, WiFi dongles, Ethernet adapters and other USB devices. No wires and no soldering work needed. Simply mount the Stackable USB Hub under the Pi Zero using the bundled spacers, screws, bolts, and the Pi Zero will get 4 new USB 2.0 ports!. The Stackable USB Hub has been carefully designed with custom-made parts, so Pi Zero fits and stacks nicely on top on it. It also has built-in a 2-way back-powering circuit to protect against power being plugged into the Pi Zero and the Stackable USB Hub simultaneously.USB peripherals can be power hungry. Grab an optional 5V 2.4A micro USB wall charger with 1.5M micro USB cable with power switch to ensure enough juice to power your projects. You can also use our Pi Zero protectors with the Stackable USB Hub.Compatible with the latest Pi Zero v1.3!! Modified spring loaded pogo pin locations to support the latest Pi Zero v1.3 (the one with the camera port). Pogo pins and the four supporting poles have been elongated to further increase the headroom between the Pi Zero board and the USB hub board, hence, longer header pins are allowed for the Pi Zero header. This stackable USB hub design is NOT compatible with the older Pi Zero v1.2 (the one without the camera port). If you are looking for the hub version compatible with Pi Zero v1.2, check out the 2nd Gen Stackable USB Hub.