You don't need a TV Tuner card or any additional device. 你不需要拥有一个电视调谐器或者任何附加的设备。
If such additional devices as are added, recording mechanism, and electric mapping device, then recording, remote transmission, alert, automatic control, etc. will be realized. 若增加附加装置，如记录机构、电气变换装置、控制元件等，则能实现压力的记录、远传、报警、自动控制等。
In addition,writing a new driver to support additional devices is supported. 此外，还支持编写新的驱动程序来支持其他设备。
The Cobalt RaQ has no support for additional devices but the Qube has one PCI slot. Cobalt RaQ不支援额外的设备,但Qube有一个PCI插槽。
Soft-switching implementation without additional devices, high efficiency and simple control. 无需附加元件即可实现软开关,效率高,控制简单。不知道这么翻对不对?