Epson U220B - TM Two-color Dot-matrix Printer Technical Reference Manual page 78

Note:
Hooking the USB cable through the locking wire saddle, as shown in the figure below, will prevent the
cable from coming unplugged.
USB downstream connector
(Only for the USB HUB: UB-U01)
3. Connect the USB cable from the host computer to the USB upstream connector.
4. For models that have the UB-U01II installed, a maximum of two USB devices can be
connected to the USB downstream connector.
Note:
The UB-U01 serves as a bus power-supply hub. Therefore, it is important to note that bus power
supply hubs (including the UB-U01II) and bus power supply functions with power dissipation of 100
mA or more cannot be connected directly to the printer. (A UB-U02II can be directly connected to a
UB-U01 hub.)
5. Install the UB-U01II/02II device driver on the host computer.
Note:
For information on how to obtain the required device drivers and their installation procedures, contact
the nearest EPSON service center.
3-32 Setup
USB upstream connector
DM connector
Attaching locking wire saddle
UB-BOARD
Locking wire saddle
USB cable
Rev. D