©Sealevel Systems, Inc.
270U Manual
5
SL9179 05/2012
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 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.
Provides 1500 VAC isolation on upstream USB port
Includes 7 USB downstream ports with 500mA available per port
SeaLATCH USB connectors provide locking connection
Native support in Windows 98SE/ME/2000/XP/Vista/7™, 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
