As hams we can never have enough gear or radios. You really do need another TYT TH-9800 / TH-7800 / TH-8600 USB Windows Programming Cable to go beside the one you purchased last week.
Genuine TYT Accessory cable. Windows compatible programming cable for TYT TH-9800 / TH-7800 / TH-8600 Mobile Amateur Ham Radio. Also compatible with mini handheld radio TH-2R and TH-UV3R. Tested on Windows 10, using driver version 184.108.40.206 dated 07/30/2019. A modern version of the cable using modern drivers.