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Us robotics / usr 550 33.6 / 28.8 modem external courier v.everything.
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Us robotics / usr 41276-1, v.everything, 1.020.091-B external modem v.everything.
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Us robotics / usr 461 isa internal modem with jumpers for com and irq.
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Us robotics / usr CJE-0235, CJE-0265 sportster 14,400 modem ccitt V.32 bis with V.42 bis external modem.
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