I have a wired UIW8001 and a wireless UIW4001. The UIW8001 shows as connected to my network, but the UIW4001 does not.
1. Has your wireless box worked before or just setting it up? Follow this guide or here to pair the receiver.
2. Recordings are stored on the PVRs encrypted hard drive.
3. Rebooting/unplugging the device won’t result in losing your recordings.
UIW4001 does not have a Hard Disk Drive. The other device (UIW8001) is the PVR. And yes, it should show on the home page of your router at 192.168.1.254
See the following link for more info.