Parts Express Cable TV in-Line Coaxial Surge Protector

I ordered this as I have been having problems with blown HDMI ports on my Samsung UHD TV that just started late last year. I am using a good quality surge suppressor so suspected that there was possibly a spike coming through my Xfinity cable TV coax. Just to be sure I ordered this coax suppressor.This part is plug and go - no settings on the TV need to be changed. The quality of the TV's picture, sound and operation was not impacted by the use of this part. I have Xfinity X1 service which uses a technology called MOCA (Multimedia over Coax) which is essentially internet service running over the coax cable which can only be accessed by the Xfinity system. This internet over coax permits you to record a program on a DVR in 1 room and then watch in another, downloads the TV schedule from Xfinity's servers, etc. If a X1 connected TV can not use MOCA then the Xfinity service will not work. This part, as advertised, is MOCA compatible and all X1 functions continued to work after connecting this suppressor.I also tested this suppressor on the coax connected to my Xfinity internet box and there was no impact on home internet performance. I tested the internet speed before and after attaching this suppressor using Ookla’s speed test and the speed, jitter, packet loss, etc. were virtually identical with and without the suppressor attached.I can’t attest to how effective this part would be with a surge coming over the Xfinity coax but at least I am sure that the use of this part won’t make things worse and based on the specs will almost certainly reduce the possibility of an electrical surge damaging my equipment.

Works very good I had 2 tv’s get hit by lightening in a week put this surge depressor everything going good now

Inexpensive Quality

Ease of installation and budget friendly make this a great buy

I like the protection this unit gives me

Didn't last long

I bought this a little over 5 years ago, I bought a set of two and today I put the other one on because apparently I must have gotten hit by lightning or had a power surge or something because my TV was not working, I put the second surge protector on and everything is up and working again, I am buying two more to have on hand

I really don't understand how anyone can give this thing 5 stars without really testing it out.Before I start, I was using a Monster HTPS 7000 signature that has built in coaxial surge protection, I moved that to the basement which is why I bought this product in order to avoid having to add long lengths of cable.Maybe this works without issues for those who live in the country or deep suburban areas where there is no high traffic areas.For me, I live in NYC, I live near a train station, three taxi cab stations and so many electrical wires and cable fiber wires all around me "can't wait to move from here"....With that said, I added this first to a monster coaxial splitter for a rooftop antenna that was receiving a lot of electrical interference from the train station during peak hours. This product completely added more interference and made it worse as far as picture quality and channels that were not affected by the trainstation were now affected.I then removed it from the splitter and added it to only the back of my TV and still the same issue.I then removed it from there and placed it to the back of my cable modem as last year a storm hit and my modem blew out due to a surge, I have 200 mbps speed, when this was connected it affected my speed badly, it went from showing 206 mbps to 143mbps.I then connected it to my TV in the bedroom and still nothing, horrible interference.I used both my TV reception testing which showed that this drastically reduced signal strength and I used speed test . Net to test the Internet speed which was also reduced with this.I had non of the issues when I had everything connected to the Monster HTPS7000 but it would be unfair to compare this to that, but I also connected it to a cheap surge protector that has coaxial surge protection which didn't show the issues that this has.Did I receive a bad one? I highly doubt it....I guess it was my fault to have high expectations from this product.I would not use this on expensive equipment, also, if this thing blows your modem or cable box it voids the warranty and you will pay out of pocket.Be very carefulAgain, my review is based on me living in a city with more interference than anywhere else.