Doing an 'FCC ID Search' on Wklwl 6203 comes up with the following info:
Your device was made by CC&C Technologies, Inc.
You can download the users manual from here: https://fjallfoss.fcc.gov/eas/GetApplicationAttachment.html?id=1223698
The manufacturers Web site is here: http://www.ccandc.com.tw but has no drivers on it! There are some contact details though so you could try emailing them...or via this wikidev page, the following are compatible adaptors using the same chipset:
- Asus WLAN 802.11N USB DONGLE MSQ-WL6203 WKLWL6203
- Brite-view WL-6203 WKLWL6203
- CC&C WL-6203-V1 WKLWL6203
- CC&C WL-6203-V1A WKLWL6203
- IOGear GWU625 QLEGWU625
- Zinwell ZIN-6203 WKLWL6203
You may have better luck getting working drivers from one of these manufacturers: eg: here's the drivers at IOGear
Let us know if they work or not.