Fully conform to the USB2.0 specification, support hot swap, support both USB1.0 and USB1.1, plug and play, no driver required;Widely compatible with hosts and devices, including all operating systems, embedded systems and devices; Advanced USB input port ESD protection, up to 15 kV IEC air gap discharge; The USB input uses a USB type B socket, and the USB input needs to be powered by 5V; USB 2.0 high-speed isolator, supports speeds up to 480Mbps, and its isolation voltage is up to 4kv rms; It belongs to true complete isolation, including USB power and ground loops, which can well isolate the complex noise and electromagnetic interference of the front end. The isolated USB signal will enter the USB processing chip for signal reformation, remove a large amount of jitter at the front end, and output after reforming with a local high-quality clock. The isolated USB output adopts a USB A-type female socket, and the output power supply is at the DC power input interface; the internal output is clean 5V power after ultra-low noise voltage regulation; The maximum output current of USB is up to 1A, and the designed output noise is as low as 40uV. The DC interface is 5.5MM/2.1MM, positive inside and negative outside; it supports 5-9V DC input, and the best voltage is 6V. (Note: When using 5V, the internal 5V regulator will no longer work, but it can continue to output the original 5V; when the power supply exceeds 7V, the heat generation of the whole machine begins to increase) Chassis size and packaging:The length, width and height of the case: 112mm*72mm*26mm, excluding the height of the machine feet and the protruding part of the connector behind the case.The weight of a single machine is about 0.2KG.The length, width and height of the carton packaging: 200mm*140mm*60mmShipping package weight: 0.45KGAccessories: a USB to DC power cord. (The standard accessories are a USB to DC power cord, an AC-DC power adapter and a USB printing cable)