This RJ45 8P8C modular coupler can be used to connect 2 pre-terminated RJ45 patch cables making a rollover cable. Also works for some Cisco applications
An RJ45 adapter has many uses. You can extend the length of an existing cable split a data or phone system line turn a DB style connection into an RJ45 or vice versa.
What adapter do I need to extend the cable for my internet?
Ethernet cables are straight pinned. You would need an inline coupler that is straight.
