This is a brand new USB electric supply manufactured by Kitaco Co. in Osaka, Japan.
It fits Kawasaki Z900RS/SE Japanese models.
Easy to instll by connecting directly on genuine harness.
Here are several technical informations from manufacturer:

Product description
2 PORT TYPE USB POWER SUPPLY EXTRACT HARNESS FOR EXCLUSIVE MODEL.
※NOT COMPLETELY WATERPROOF.
※DO NOT USE WHEN WASHING VEHICLE OR RAIN. USE RUBBER CAP WHEN NOT USED

Notes
○USB PORT:1,000mA×2
○DC5V MAX OUTPUT:2,000mA (1 PORT USE)
○DRIP-PROOF
○LED BUILT-IN (BLUE)
○FROM:BRAKE SWITCH TERMINAL

Applicable model

Z900RS/SE

ZR900C

ZR900K

※JAPANESE MODEL ONLY