User manual

4. Using the USB Device Server

4.1 Introduction

The goal of this produce is to provide the USB device server in a single product. We

developed a new technology called “NetUSB” to achieve this goal. Basically, the

“NetUSB” is a “USB over IP” technology that transparently redirects all USB packets to

TCP/IP network channel. “NetUSB” allows you to use USB devices as if they were

connected directly to your PC although they are actually remotely connected to the

server.

4.2 Connect & Disconnect

“NetUSB” allows you to use USB devices as if they were connected directly to your PC

although they are actually remotely connected to the server. The “connect” operation is

a software operation that simulates an actual USB device plug-in. That is to say, when

you do a “connect” operation in the Control Center, PC can then detect a USB device’s

plug-in, although actually you do not plug in any USB device. Similarly, the “disconnect”

operation is a software operation that simulates the disconnection of the USB device.

Once the connect operation is successful, the operations to use that USB device are

just the same as if the USB device is directly connected to the PC.

If a USB device is “connected” by a PC, we say that PC has the ownership of the USB

device. Only one PC can get the ownership of a USB device at the same time.

Therefore, if a USB device is connected by one PC, no other PC can connect this USB

device until this USB device is disconnected.

4.3 Subnet Issue

Before using the NetUSB technology, you must first make sure that your PC can

access the server via TCP/IP. The simplest way to do this is using “Control Center” to

search for the server on the network and change its IP address to be the same subnet

as your PC. If the server and your PC are not in the same TCP/IP subnet, Control

Center will show the server in red, as the following figure. You must change the IP

address (or using DHCP) of the server so that the server and your PC are in the same

subnet. Control Center will show these servers in blue, meaning you can access these

servers by the NetUSB technology.