Access points that support SNMP?

I work for a tiny resale ISP and we use the Network Performance Monitor to monitor our customer's bandwidth usage. Unfortunately, some of the CPEs we use apparently do not support SNMP. We usually give a free access-point, such as a Linksys or Dlink to our customers as part of the install. Does anyone know of any SOHO type access points that would allow us to monitor bandiwdth usage?