adding additional wireless router to XR500

[Mikeowhite]

Last year I purchased an XR500 wirless router to replace my old wireless router.  Is it possible to use the old router as a range extender using a wired port to the wired input on the old router?

[plemans]

what old router is it? 

Some have an access point mode you could setup. 

[antinode]

> Some have an access point mode you could setup.

   Almost any wireless router can be configured as a wireless access
point, whether or not it has an explicit WAP-mode option.  However, if
you want specific advice on your (unspecified) "my old wireless router",
then you might want to reveal its maker and model number.

[Netduma-Fraser]

As has been mentioned, you can use it as an additional WiFi point, but not as an extender per se.

[Mikeowhite]

sorry my bad.
Netgear N750 WNDR4000 is the model

[antinode]

> Netgear N750 WNDR4000 is the model

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual (at least).  Read.  Look for
"access point" or "ap mode".  Prepare for disappointment.

   As I read its User Manual, unless the feature was added in some later
firmware version, the WNDR4000 is too old/lame to offer an explicit
WAP-mode option.  For an ad hoc scheme to deal with such models, see,
for example:

      https://community.netgear.com/t5/x/x/m-p/1463500

   That's written for a Netgear C6300-as-WAP, but the steps are about the
same for any other router (any make/model) which lacks a one-step WAP
option.  If the router which you're reconfiguring has a WAN/Internet
Ethernet port (unlike a Cxxxx), then leave it unconnected.