68 M101H Series User Guide
COM Port Definition
M101H tablet computer uses Hottab utility for built-in peripherals control. All the COM port
numbers have been defined in the OS image coming with the package.
COM Port Device
COM 1
RS232 at I/O
COM 2
RS232 of Expansion Port (optional)
COM 4
Bluetooth Auto Pairing
COM 9
GPS
COM 12
RS232 at Docking (optional)
COM 15
Barcode Reader (optional)
COM 20
UHF RFID (optional)
For some special applications, user might re-install OS and lose the COM port settings. To make
sure the features works properly with Hottab utility, please follow the procedure below to re-
define the COM port numbers:
1. Go to "Device Manager", right click on the COM number need to be changed, and tap on
"Properties" to open the setting page.
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