So, I found myself in a situation where the coaxial cable went into one room but not into the next room. I originally used a splitter to split this coax signal (second splitter) and used 2 Gocoax adapters (1 for each room, with an ethernet connection to another adjacent room). I would say it worked well. However, it consumed twice as many outputs, and I wasn't sure how the splitter affected the overall throughput. I first tried a transliterated 2x1GbE adapter (see my review on this product) and it didn't work for my scenario. Then I tried these. I didn't do any hard measurements though, I feel like the throughput is a bit higher, and I'm now getting more consistent throughput across the wireless access points in both rooms. I think I should have replaced the splitter + 2 Gocoax adapter with a Kiwee 2x1GbE broadband adapter. Easily integrates into an existing MoCA 2.5 network and will most likely work just as well as a master node.
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