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I/O ports, and the ability to connect devices externally. And wouldn’t you prefer to use an external connection to connect your serial peripherals instead of installing a PCI or ISA card in your system? BLACK BOX ® USB Hubs enable you to do just that.
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IC1020A 9/19/2007 724-746-5500 #26248 Technically Speaking RS-232 RS-232 defines three types of connections: electrical, functional, and mechanical. This interface is ideal for the data- transmission range of 0–20 kbps/50 feet (15.2 m). It employs unbalanced signalling and is usually used with DB25 connectors to interconnect DTEs (computers, controllers, etc.)
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