Support rail installation In the external power supply DC5v with reverse connection protection With four USB status indicator In each USB port with ESD protection USB chip This product does not include DIN rail buckle, DIN rail buckle, users need to buy their own!! Technical index: Compatible with USB2.0 ADUM3160 isolation voltage: 2500V Isolation Voltage: 1500V power module Support 1.5Mbps and USB low speed 12Mbps device does not support the pure speed Support USB bulk transfer, control transfer, interrupt transmission, synchronization / isochronous transmission Power supply: from the host computer USB port (external) Due to different product batches, the appearance , which does not affect the use Colour:As Shown Material:PC Package Contents: 1 x USB isolator 1 x Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.