Tyan Computer Transport GT24 B2891 - Manual (Page 67)

Chapter 3: Replacing Pre-Installed Components 59
3.8.1 S-ATA Backplane (M1204) Features
U4, SATA 4 Connector
U3, SATA 3 Connector
U2, SATA 2 Connector
U1, SATA 1 Connector
HDD Active LED HDD Power LED