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This follows Sony’s Japanese NCP-HG100 connection guide. It gives this browser address without a firmware or hardware revision. Confirm that the installed gateway still uses it.
Sony’s setup instructions use admin and the individual unit’s bottom-label Key(WPA). Use the current account if it has changed; the label is not a universal password.
Inspect the wireless-device list
After login, follow ネットワーク (Network) → インターフェース (Interfaces) → 無線LAN (Wireless LAN). In 無線LANデバイス一覧, read the displayed SSIDs and their modes. Distinguish the client entry from Master entries when comparing the expected upstream network with the administrator’s records.
Keep the inspection read-only
Sony’s figure uses Wifi1: クライアント “RootAP” as an example; it does not establish your current SSID. Stay on the overview without selecting a settings control or saving changes. If the screen or address differs, confirm the installed interface with the administrator.
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Sony Network Communications — NCP-HG100 connection guide