Intel SR2520SAXR User Guide - Page 36

The NIC LEDs at the right and left of each NIC provide the following information. Table 3. NIC LED Descriptions LED Left Right LED State Off Solid Amber Blinking Amber Off Solid Amber Solid Green Description No network connection Network connection in place Transmit/receive activity 10 Mbps connection (if left LED is on or blinking) 100 Mbps connection 1000 Mbps connection Hot-Swap Backplane The Intel® Server System SR2520SAX/SR2520SAXS and SR2520SAXR/ SR2520SAXSR supports a backplane. The backplane provides the platform support for peripheral drives and hot-swap SAS or SATA hard drives. To eliminate several cables, the backplanes are also used as a pathway for signals from the server board to various platform interconnects, including those for the control panel and peripheral drives. The backplane acts as a 'pass-through' for the SAS/SATA data from the drives to the SATA controller on the server board or a SAS/SATA controller add-in card. It provides the physical requirements for the hot-swap capabilities. AF001531 Figure 10. Hot-Swap Backplane Note: The Intel® Server System SR2520SAX/SR2520SAXR ships with a passive backplane with 6 SATA cables installed. The Intel® Server System SR2520SAXS/SR2520SAXSR ships with an active backplane with 2 SAS cables installed. 14 Intel® Server System SR2520SA User's Guide