Connects to the standard Synscan handset firmware update cable (supplied with Synscan telescopes, mounts and upgrade kits) allowing connection directly to a PC's USB port. Simple Plug and Play. Can also connect other serial (RS232) equipment to your PC via the USB port. Cable length 1.5 metres. Fully compliant with USB 1.1. Supports RS232 interface. Data transfer rate over 250Kbps. OS Support: Windows XP/7/8/9/10. Specially designed genuine SkyWatcher cable tested with SynScan systems, solves the problem often found with generic converters.