Black Box IC136C Specifiche Pagina 8

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CHAPTER 2: Introduction
2. Introduction
Connect old-style serial peripherals (modems, serial
printers, etc.) to the USB port on your Windows
computer. The USB Solo (USBSerial) converts the
USB interface to a standard RS-232 serial interface with
an ordinary DB25 or DB9 connector.
2.1 How Does USB Work?
USB uses a unique cable and connector system. The
“upstream” side of the cable (“A” side) connects to
a USB hub or PC. The “downstream” side (“B” side)
connects to USB devices or to another hub’s “A” side.
The USB Solo has a “B” side connector on one side and
a legacy COM or RS-232 port connector (DB25 or DB9)
on the other side. It allows you to plug a legacy COM-
port device (such as a modem, digital assistant, or
printer) into the USB bus.
Two models are available: The IC138A-R2 has a DB25 on
the RS-232 side, and the IC199A has a DB9 connector
on the RS-232 side.
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