MIDI 切换器允许在多个设备之间进行切换，并且不需要物理地更换电缆。
A MIDI switcher allows switching between multiple devices, and eliminates the need to physically repatch cables.
答：你可能根本不需要任何特殊的产品，只需要一根合适的电缆线将电脑和电视机连接起来，最多再要一个适配器。
A: you very likely don't need any special product, other than the right cables and, if need be, adapters, to connect your computer and your TV.
用串口直连电缆连接到每台交换机的串行控制端口(9600、8 - N - 1、无流控制)，默认下不需要用户ID和密码。
Connect to the switch using the serial console port with a straight serial cable (9600, 8-n-1, no flow control) with default no user ID or password required.
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