I have a wireless CF card that came with a 5600. There's no manufacturer name but is labeled Wireless LAN 11Mbps CF Card on front and Model WL-672. Looking at Google, it might be a Sparklan or Gemtek. It powers up but doesn't connect on the 5600 but does on the 5500. Both units running Sharp Roms: 1.32 on the 5600 and 3.10 on the 5500. Where do I go from here?