... half duplexVCC/A+/B-/GND9600 ~ 25600Mbps, half duplexLEDs optional for PW/A+/B-Cable:UL2725 standard26*2C+28*1P, Tinned ... USB RS422 cables, USB Parallel cables, USB to Audio cable. The chips are availavble for PL2303, CP2102, FT232RL, ZT213. SP485, MAX3232, ... CM119, etc. These products are widely used in POS terminal applications, serial mouse, modem ...