Brother TD-4000 Service Manual page 135

(3) Select the "System".
Figure 38. "Performance and Maintenance" screen
(4) If the "System Properties" screen is displayed, click the "Device Manager" on the
"Hardware" tab.
(5) The devices on the PC are listed. Click the "+" of the "Ports (COM & LPT)".
There is the "Communications Port (COM*)". Check the COM port number.
Figure 39. "System Properties" screen
Figure 40. "Device Manager" screen
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