Is this unknown object in Explorer's network area a security threat?

What is object "PK5000Z AP" in the windows 8.1 file explorer network area? It is not there constantly, but comes and goes.

I have found with a search that there is a ZyXEL PK5000Z modem, and the properties of the object in explorer say the manufacturer is ZyXEL. But the modem that Comcast Cable provided me is a ubee D3.0, Model u10c035. I don't have a ZyTEL modem.

I have a Netgear R7000 router that is shown in file explorer as "R7000(Gateway)", category=network infrastructure.

My home network is a workgroup of 4 computers -- two wired desktops and two wireless laptops. I am having a lot of other problems but I am posting this separately because it seems separable and it seems scary to me.

Does this PC have wireless adapter? I wonder if somehow you are connecting to that device (possibly a neighbor) if it has no pass-phrase configured.
Run in cmd: ipconfig -all
Paste here the results

I can run ipconfig -all but I can't copy out of that window.

Wireless adapter:
Intel(r) DualBand Wireless AC7265

run this instead:
Ipconfig -all >>%userprofile%\desktop\ipconfig.txt
Paste the contents of txt file in a CODE tag (number sign above)

I have to leave right now but I will paste later tonight when I get pack from an appointment.

Code:

Windows IP Configuration

   Host Name . . . . . . . . . . . . : grandmabarb
   Primary Dns Suffix  . . . . . . . : 
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Local Area Connection* 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
   Physical Address. . . . . . . . . : 60-57-18-24-70-71
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Intel(R) Dual Band Wireless-AC 7265
   Physical Address. . . . . . . . . : 60-57-18-24-70-70
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::4d4c:3a2e:a4ed:b64b%6(Preferred) 
   IPv4 Address. . . . . . . . . . . : 192.168.1.3(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Monday, September 14, 2015 3:50:53 PM
   Lease Expires . . . . . . . . . . : Tuesday, September 15, 2015 5:51:26 PM
   Default Gateway . . . . . . . . . : 192.168.1.1
   DHCP Server . . . . . . . . . . . : 192.168.1.1
   DHCPv6 IAID . . . . . . . . . . . : 106977048
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-5D-FD-6E-00-00-00-00-00-9D
   DNS Servers . . . . . . . . . . . : 192.168.1.1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Bluetooth Network Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Physical Address. . . . . . . . . : 60-57-18-24-70-74
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{C7D997EE-65DF-4A13-B9A1-56476CE2513A}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:2c8c:393b:3f57:fefc(Preferred) 
   Link-local IPv6 Address . . . . . : fe80::2c8c:393b:3f57:fefc%9(Preferred) 
   Default Gateway . . . . . . . . . : ::
   DHCPv6 IAID . . . . . . . . . . . : 318767104
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-5D-FD-6E-00-00-00-00-00-9D
   NetBIOS over Tcpip. . . . . . . . : Disabled

Additional information:
I have also experienced telephone and camera objects in File Explorer. I have been discussing them in a forum on a netgear forum:
https://community.netgear.com/t5/Nig...rk/td-p/980705

I thought you had both a wired and wireless connection same time, but it seems only wireless is working.

You can see your other PCs and router in Network of this PC?

Now I wonder if it is your wireless that is misconfigured, do you have a pass-phrase for your wireless? If not, that Access Point (AP) may be connecting to your network, hence becoming visible.

Check all wireless routers/access points that you may have in the house for pass-phrases. Configure one if it is lacking.

GokAy said:

I thought you had both a wired and wireless connection same time, but it seems only wireless is working.

You can see your other PCs and router in Network of this PC?

Now I wonder if it is your wireless that is misconfigured, do you have a pass-phrase for your wireless? If not, that Access Point (AP) may be connecting to your network, hence becoming visible.

Check all wireless routers/access points that you may have in the house for pass-phrases. Configure one if it is lacking.

I did not know about pass-phrases but I will now do that.

I think you are right about the network. The network has 4 computers. Each cannot see all the others. For example, this Win8.1 HP laptop can see out to a win7 Dell and a Win98. Both of those are wired desktops.

Another Dell win7 laptop can see the wired win7 desktop but nothing else. None of them can see into it.

The two desktops -- Dell Win7 and Win 98, booth wired -- cannot see each other.