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< D | <D |
<4Pin “B ” Type USB Port>
- Serial interface
PIN | SIGNAL | I/O | DESCRIPTION |
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2 | TxD | Output | Printer transmit data line |
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3 | RxD | Input | Printer receive data line |
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4, 20 | DTR | Output | Printer handshake to host line |
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6 | DSR | Input | Data Send Ready |
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1, 7 | GND | - | System Ground |
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- USB interface
PIN | SIGNAL | I/O | DESCRIPTION |
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1 | +5V | - | +5V |
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2 | DATA- | - | Printer transmit data line |
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3 | DATA+ | - | Printer transmit data line |
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4 | GND | - | System Ground |
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