Serial ports | USB ports | Graphics interfaces | Wireless communication | |||||
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RS-232 x2 | RS-232 x3 | RS-232 x4 and more | USB x3 | USB x4 and more | VGA | DVI | Wi-Fi | |
BIS-6620I |   |   |   |
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BIS-6620II |
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BIS-6621 |   |   |   |
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