If there is any question as to whether the "S" version exists ...
smartctl 6.4 2015-06-04 r4109 [x86_64-linux-3.16.0-4-amd64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke,
http://www.smartmontools.org === START OF INFORMATION SECTION ===
Model Family: Toshiba 3.5" DT01ACA... Desktop HDD
Device Model: TOSHIBA DT01ACA050
Serial Number: 7xxxxxxxS
LU WWN Device Id: 5 000039 ffcd86880
Add. Product Id: DELL(tm)
Firmware Version:
MS1OA7S0User Capacity: 500,107,862,016 bytes [500 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches