Lenovo THINKSERVER 3797 - Manual (Page 163)

SAS riser-card connectors and LEDs
The following illustrations show the connectors and LEDs on the SAS riser cards.
Note: Error LEDs remain lit only while the server is connected to power.
A 12-drive-capable model server or a diskless model server contains the following
riser card:
1 USB connector
2 PCI Express RAID adapter
3 SAS error LED
A tape-enabled model server contains the following riser card:
1 USB connector
2 PCI Express RAID adapter
3 SATA tape signal
4 Tape power
5 SAS error LED
6 USB tape
PCI riser-card adapter connectors
The following illustration shows the connectors on the PCI riser card for
user-installable PCI adapters.
Chapter 6. Removing and installing FRUs 155