Product Name: dB25-USB Adapter Model NO.: DB25-USB Trademark: ABTEC Transport Package: Box Specification: 103mm*95mm*95** Origin: China HS Code: 903089909 Product Description DB25-USB is a USB parallel port adapter. When audio switches SWF12, SWM12 and SWU12 are used, please provide DB25-USB adapter kit at the same time. It contains DB25 cable from L-COM Company of the United States, which can effectively restrain interference during parallel data transmission. DB25-USB, as a switching bridge, plays an important role in connecting computers, audio analyzers and SW12 series audio switches.Background KnowledgeParallel interface is also called parallel port for short, and English identification is Parallel or LPT,PRN. The so-called "parallel" refers to the simultaneous transmission of 8-bit data through parallel lines, thus greatly improving the speed of data transmission, but the length of parallel transmission lines is limited, as the length increases, the interference increases and the data is prone to errors.Product Parameters1.Power Supply:USB_5V2.Size:103mm*95mm*95mm3.Weight:240g4.Operating temperature:0ºC to +50ºCUSB-DB25 Kits1.USB-DB25 adapter2.USB 2.0 wire3.DB25 wireWiring Diagram