CH9102 Chip USB to TTL (Serial) Converter About this item Type: USB to TTL Model: CP2102 Baud Rate: 50bps~4Mbps System Support: windows vista / XP / server 2003/200, Mac OS-X/OS-9, Linux Input Voltage: 3.3V-5V Pin Number: 5 Pin Temperature: -40℃to +85℃ Color: Red Size:41mm x 15mm