3  Drive activity LED
4  Drive status LED
Each hot-swap drive has two LEDs. 
Drive LED Status Description
Drive status LED
Solid yellow
The drive has an error.
Blinking yellow (blinking slowly, about one 
flash per second)
The drive is being rebuilt.
Blinking yellow (blinking rapidly, about four 
flashes per second)
The RAID adapter is locating the drive.
Drive activity LED
Solid green
The drive is powered but not active.
Blinking green The drive is active.
5  Front I/O assembly
For information about the controls, connectors, and status LEDs on the front I/O assembly, see “Front I/O 
assembly” on page 19.
7  Pull-out information tab 
The Lenovo XClarity Controller network access label of the server is attached on the pull-out information tab.
8  VGA connector (optional)
Used to attach a high-performance monitor, a direct-drive monitor, or other devices that use a VGA 
connector.
Front view of server models with 3.5-inch simple-swap drives
The following illustration shows the front view of server models with eight 3.5-inch simple-swap drives. 
Figure 8. Front view of server models with eight 3.5-inch simple-swap drives (0-7)
Table 5.  Components on the front of server models with 3.5-inch simple-swap drives
Callout Callout
1  Rack latch (left)
2  3.5-inch simple-swap drive bays 
3  Front I/O assembly  4  Rack latch (right)
5  Pull-out information tab 
6  VGA connector (optional)
1  4  Rack latches
18
ThinkSystem SR550 Maintenance Manual