Introduction – Impulse 270U User Manual
Page 3

Introduction
The SeaI/O-270U is an optically isolated 7-port USB hub that protects the host
computer from spikes, surges and ground loops commonly found in industrial
environments. The hub is powered by an industrial grade wall-mount power supply
providing a full 500mA to each attached USB peripheral. The SeaI/O-270U is ideal
for adding USB ports to a SeaPAC touchscreen HMI system, a Relio R1000
embedded solid-state industrial computer, or a SeaI/O data acquisition “stack”.
The SeaI/O-270 integrates patent-pending SeaLATCH USB ports, which are fully
compatible with standard USB cables. When used with the included USB cable
with a SeaLATCH type B USB connector, the metal thumbscrew provides a secure
metal-to-metal connection to the hub and prevents accidental cable disconnection.
The hub’s seven SeaLATCH type A USB connectors can secure USB peripherals to
the hub in the same way. Additionally, a highly-retentive type B USB connector
helps prevent unintentional separation from a standard USB cable.
Features
Provides 1500 VAC isolation on upstream USB port
Includes 7 USB downstream ports with 500mA available per port
Patent-pending SeaLATCH USB connectors provide locking connection
Native support in Windows 98SE/ME/2000/XP/Vista™, and Linux kernel v2.4
operating systems
Status LEDs indicate external power, connection to host, and fault condition
High-retention USB type “B” connector prevents accidental disconnection of
standard USB cable
© Sealevel Systems, Inc.
- 1 -
SeaI/O-270U User Manual