HM-CB180-Z-15 Zahnrad-Satz für Walkera CB180D \ 180Q \ 180Z V200DQ01 Hubschraube. The product is only compatible with port of 34MM. Suitable for laptop and desktop with 34mm slot. RS232 RS485 Seriell zu WiFi und Ethernet Konverter USR-W610 TCP Server / TCP.
eBay