Reddit reviews DIRECTV Broadband DECA Ethernet to Coax Adapter (DECABB1MR0) Generation I

Would two of these be fine? https://www.amazon.com/gp/product/B004HAOWLW/ref=ox_sc_act_title_1?smid=A2HIWVB3P59IHZ&psc=1

Or should I go with this?
https://www.amazon.com/gp/product/B008EQ4BQG/ref=ox_sc_act_title_5?smid=A2LXBKOLL3J3K6&psc=1

Use the coax wiring in your house to let the DirecTV main HD-DVR/Genie talk to the Genie Clients, Don't use Ethernet at all to directly plug into a DVR or client - have ONE broadband adapter coming off your DirecTV termination point be your connection to Ethernet [example: https://www.amazon.com/DIRECTV-Broadband-Ethernet-DECABB1MR0-Generation/dp/B004HAOWLW] (you will have a SWM adapter like this: http://pimages.solidsignal.com/SWM-8_zoom.jpg) - plug into one of the open boards the broadband adapter - the entire network on the DirecTV coax side should then get Internet access for on demand

Something like this should work just fine, Its a bit slower but you shouldn't have any issues pulling 100Mb/s with it and it's way cheaper. No need for a MoCA device unless you are trying to replace a FIOS router.

http://www.amazon.com/DIRECTV-Broadband-Ethernet-DECABB1MR0-Generation/dp/B004HAOWLW

Ok, so apparently a DOCSIS network is what's going to go into this old dorm building for a 1 year period before it is demolished. My supervisor wants me to find some equipment to test to see if a signal can be sent over the coax cable and received by a router in the student's rooms. Any recommendations for cheap equipment I can buy for this testing? I have a meeting on the subject tomorrow and any help would be greatly appreciated.

I found this: https://www.amazon.com/dp/B004HAOWLW/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=2VOXNI7Q8O9XE&coliid=I139SDI35DB17B

but I'm not sure if this is what I should be looking for. I guess I need a mini version of a CMTS?

I use this to get ethernet to my living room: DIRECTV Broadband DECA Ethernet to Coax Adapter (DECABB1MR0) Generation I https://www.amazon.com/dp/B004HAOWLW/ref=cm_sw_r_cp_apa_Jg7GAb3H8ZV5D