Both the products are identical with the exception that the ALIF4021 has 2x copper and 2x SFP network port, and the ALIF2122 has two SFP's ports.
Support for multi-rate SFP's was added in firmware version 3. The table below describes the ALIF4000 usage at different network speeds.
|Number of Heads||Single-head||Single-head||Dual-head||Dual-head|
|Video Suitability||Typically computing screens and desktop application||Single screen video content and desktop applications||Fullscreen, but less demanding, moving video content on both video interfaces||Fullscreen moving video content/demanding applications running on both video interfaces|
|Typical Application||Desktop or SCADA user||Single screen video editing using a small window in the GUI||Video editing across both screens||Intensive video-content creation/editing|
|Multi-rate Extension Distance||100m||100m||100m||30m/90ft|
The ALIF4000 has been tested with the Lindy PL2303RA (Chipset PL2303RA) and StarTech ICUSB2321F (Chipset FTDI - FT232RL). The USB to Serial adapter can be connected to any of the USB ports from 2 to 5 on the ALIF4021 receiver. Between the ALIF4021 transmitter and host, use a DB-9 pin null modem such as our part number CAB-9F/9F-NULL-MODEM.
Yes, the ALIF4001 does support 1Gb Copper or Fibre SFP Modules.
No, the ALIF4021 does not support 1Gb Copper or Fibre SFP Modules.
From firmware v3 and above, the copper network ports are now active. However, you can only use the copper or the SFP ports. The ALIF4000 will detect which ports are active on boot. If you wish to use the copper ports, make sure that you do not have an SFP module inserted, if even the fibre cable is not connected. The presence of an SFP module will prevent the copper ports from working, as the unit will assume that it is the connection that you wish to use. If you want to switch between the copper and fibre ports, reboot the ALIF4000 after changing the cables to redetect the network connection(s). If you have already added the ALIF4000 to an AIM Manager, you will need to delete it from the AIM before it will be recognised on the different port(s).
Make sure that you do not have an SFP module inserted into the ALIF4021. Even if a cable is not connected to the SFP, the presence of an SFP will mean that copper ports will not be used. Remove any SFP's and reboot the unit.