2 Powerline Netgear WGXB102 at the same time

[sswats]

I know you can use 2 ethernet XE102's at a time because the manual says its okay, but there's no mention of using 2 wireless WGXB102, and most places don't even sell it on its own, only in the pack with the XE102.

So there's already one set of xe102 and WGXB102, so can i use another set so i have an extra wireless access point and an extra ethernet point around the house?