For Thinksystem ST550 ST558 IBM 2.5" SAS/SATA HDD Caddy Tray
IBM 2.5" SAS/SATA HDD Caddy Tray for Thinksystem ST558 SR950 530 630 SN550 SD530. IBM Thinksystem. ST550 ST558. 1 SAS Tray Caddy. Note: This Tray is for 2.5" HDD, p lease check pictures for more details.