Add four rugged external USB (Universal Serial Bus) 2.0 ports from a single USB (Universal Serial Bus) connection An all metal chassis & surface mounting or DIN rail mounting options makes this versatile for almost any environment Optional external terminal block DC power connector can ensure full power to all four USB (Universal Serial Bus) ports simultaneously Backed by a Star Tech.com 2-year warranty & free lifetime technical support This sturdy, industrial grade USB (Universal Serial Bus) hub can be wall mounted or installed onto a DIN rail for convenient access to its 4 female USB (Universal Serial Bus) ports, providing a work area, server room, or industrial area with USB (Universal Serial Bus) 2.0 connectivity. With support for Hi-Speed USB (Universal Serial Bus) 2.0 data transfer rates of up to 480 Mbps, this 4 port USB (Universal Serial Bus) hub is backwards compatible with USB (Universal Serial Bus) 1.1 specifications & can be powered through the host USB (Universal Serial Bus) bus, or self powered using a three wire terminal block connector (7-24V). WhatÂ’s in the box USB (Universal Serial Bus) Cable DIN Mounting Rails USB (Universal Serial Bus) 2.0 Hub Instruction Manual