The Square 3 Port USB Hub with USB-C Connector (SHJ2-01) is a portable unit that allows you to connect multiple USB devices to your Square Stand AC Adapter. With a sleek black color and compatibility specifically designed for the Square SHJ2-01 model, this USB hub features a USB-C connector for efficient data transfer. The output voltage of 5V ensures consistent power supply to your connected devices, making it a convenient and reliable accessory for expanding your Square ecosystem.