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Bottom Panel: 99EX
Note: Signals referenced are for a DTE device.
I/O Connector
The I/O connector powers the terminal, charges the main battery, and facilitates communication. All Dol-
phin peripherals are designed to work exclusively with this connector.
The I/O connector supports RS232 and high speed USB v2.0 communication. For RS232, the maximum
communication speed is 115.2 Kbps with seven baud rate settings. For USB, the communication speed
is up to 480 Mbps.
I/O Power Out
The I/O connector also provides power out (to peripheral devices) +5V at 500mA. This means that,
with the proper cable, the terminal can power another device. By default, power out is disabled, but the
5V output may be enabled, see Five Volt Control on page 7-12.
Pin Description
1GND
2GND
3 USBC_DET
4 USBC_D-
5RTS
6 USBC_D+
7DTR
8SPK
9 Audio_GND
10 MIC
11 CTS
12 USBH_D-
13 5V_OUT
14 USBH_D+
15 TXD
16 RXD
17 VCC
18 VCC
2 4 6 8 10 12141618
1 3 5 7 9 11 13 15 17