Toshiba AL13SEB300 Lenovo System x3550 M5 300GB 2.5" 10K RPM 64MB Cache SAS 6GB/s Hot-Swap HDD Hard Disk Drive with Swap Tray 00AJ100 00AJ096 00AJ097.Toshiba Model Number: AL13SEB300Lenovo Part Number: 00AJ100Lenovo Option Part Number: 00AJ096 1P00AJ096Lenovo FRU Part Number: 00AJ097Compatible Part Numbers: HDEBC03LPA51Compatible Models: Lenovo System x3550 M5Specifications:Form Factor: 2.5"Series: Server HDDInterface: Serial Attached SCSI, SAS 6GB/sCache: 64MBCapacity: 300GBRPM: 10,000 RPM