Question about Cisco AP

Greetings.

If I were to get an AIR-AP1131AG-J-K9 Aironet 1100 series AP, would the "J" in the model number mean that the web interface is all in Japanese and cannot be changed to English? What about IOS? Japanese also?

I can't answer you for sure. But I think most probably it's all in English. The letter J (and all other letters (A, C, I ...etc) has to do with channel and power settings that are compliant with local government regulations. Cisco doesn't seam to mention any thing about language differences. Check here: www.cisco.com/en/US/prod/collateral/wire...900aecd801b901c.html

Furthermore, the IOS download for the AP1131AG in Cisco's download site does not provide multiple language images. Only one image per version. This probably indicates that it's all in English.