4Chapter 1: Before You Start
Synology DS420+ at a Glance
No. Article Name Location Description
1 Status Indicator
Front
Displays the status of the system. For more information, see "LED
Indicator Table."
2 Drive Status Indicator Displays the status of each drive. For more information, see "LED
Indicator Table."
3 Drive Tray Lock Lock or unlock drive trays.
4 USB 3.0 Port Connect external drives or other USB devices to the Synology NAS here.
5 Power Button
1. Press to power on your Synology NAS.
2. To power o your Synology NAS, press and hold until you hear a beep
sound and the Power LED starts blinking.
6 Drive Tray Install drives (hard disk drives or solid state drives) here.
7 LAN Port
Rear
Connect network cable here.
8 RESET Button
1. Press and hold until you hear a beep sound to restore the IP address,
DNS server, and password for the admin account to default.
2. Press and hold until you hear a beep, then press and hold again until
you hear three beeps to return the Synology NAS to "Not Installed"
status so that DiskStation Manager (DSM) can be reinstalled.
9 USB 3.0 Port Connect external drives or other USB devices to the Synology NAS here.
10 Power Port Connect power cords here.
11 Fan Disposes of excess heat and cools the system. If the fan malfunctions,
the Synology NAS will emit a beeping sound.
12 Kensington Security Slot Attach a Kensington security lock here.
