PROLiNK PPS2104N User Manual - Manual (Page 29)

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7. Troubleshooting
This chapter provides useful information to help you resolve difficulties that you may experience with your Server.
Fault symptoms, possible causes, and remedial actions are provided within a quick reference table. This Server’s USB
ports only support MFPs, printers, scanners and mass storage.
7.1. LED Indicators
Indicators Behavior Description
Power On Power On
Off Power off/System error
Link On Network connected
Off No physical connection to network
Status Blinking Activity on network
Off No activity on network
USB On USB device connected
Blinking Connected USB device error
Off No physical connection to USB device
7.2. Firewall
If firewall software has been installed on your PC, it may block the communication between the PC and the
ShareHub Device Servers so that the ShareHub Device Servers cannot work properly. To solve this problem,
either disable the firewall or configure the firewall to allow the following TCP and UDP ports:
7303, 7305, 20005, 30201, 30202, 30203