CryptKeeper, the little Bangkok Airways lounge in Bangkok also has internet terminals, but you have to stand-up (no chairs) when logging in....guess that's to encourage you to move on after quickly checking emails, etc.
ny747, I don't think you can access TG biz lounges with just a UA RCC pass. But if you have any Star Alliance Gold Card, you can get in. For example, if you are UA Premier Executive or Premier Executive 1K you can just flash the card and TG boarding pass.