Industrial-grade - 8kV Air - 4kV Contact - Metal - Mountable - 5 Gbps This TAA compliant 4-port industrial USB 3.0 hub gives you the scalability you need in harsh industrial environments, product and repair labs, conference rooms or office workstations. With its rugged industrial grade metal housing, it is designed to meet the advanced requirements of connecting a high number of devices in factories and office environments. Perfect for Harsh Environments This industrial USB hub delivers reliable performance with a metal, heavy-duty housing. It supports wide-range 7-24V DC terminal block input, giving you the flexibility to power the hub as required, based on your own power input capabilities. Perfect for factory environments, the rugged hub also supports a wide operating temperature range (0°C to 55°C) and offers ESD protection to each USB port, which can help prevent damage to your connected devices. Connect & Charge More USB Devices Designed for a high volume of connections, this robust USB 3.0 hub offers four connection ports, for connecting more USB devices and peripherals. The hub also supports USB battery charging specification 1.2, delivering up to 2.4A on any port to a maximum of 20W total, so you can charge your mobile devices faster than traditional USB ports allow. Locate the Hub Where You Need It Most With versatile installation options, you can install the hub where it's best suited for your environment. With built-in mounting brackets and an included 1.8-meter USB host cable, you can securely mount the USB 3.0 hub to most surfaces such as a wall, under a desk or rack. StarTech.com offers an external power adapter, ITB20D3250, sold separately. The universal DC power adapter can be used as an alternative, back up or replacement power supply for StarTech.com's line of industrial USB hubs. Works with Older USB Devices The rugged USB hub supports the full 5 Gbps bandwidth of USB 3.0 and is backward compatible with previous USB devices. You can connect your legacy peripherals alongside your newer USB 3.0 devices without any disruptions. The ST4300USBM is backed by a StarTech.com 2-year warranty and free lifetime technical support.