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Blue Screen Again
Posts: 9
Registered: ‎10-07-2011
Location: Boston
Views: 923
Message 1 of 4

Lenovo W520 regular SATA 2 hard drive with a SATA 3 SSD?



Im thinking if i can use a SSD as my main hard drive, and then put my old hard drive to the ultrabay slot. But im wondering if the SSD is using SATA 3 and the old hard drive is using SATA 2 or they both using SATA 2 connection??

W520, i7-2630QM, Nvidia Quadro 1000m, 320GB 7200 RPM hard drive, 64GB MyDigitalSSD mSATA SSD, 1600x900 resolution screen.
Retired Support Specialist
Posts: 1,241
Registered: ‎11-02-2011
Location: India
Views: 777
Message 2 of 4

Re: Lenovo W520 regular SATA 2 hard drive with a SATA 3 SSD?



Welcome to Lenovo Community


You can use SSD as primary drive and install Operating system on the same .


Secondly SSD which is installed in your system is SATA III while as the other hard drive is SATA II

Please find the link which will guide you to install the Operating System on SSD



Hope This Helps


lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 773
Message 3 of 4

Re: Lenovo W520 regular SATA 2 hard drive with a SATA 3 SSD?

the main hdd bay and the ultrabay of the W520 both have SATA 6.0 gbs connection, while the mSATA has only a SATA 3.0 gbs connection.

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
Posts: 948
Registered: ‎06-03-2011
Location: US
Views: 747
Message 4 of 4

Re: Lenovo W520 regular SATA 2 hard drive with a SATA 3 SSD?

I think what you were trying to ask was, "if you use a SATA III SDD and a SATA II HDD, will both of them only achieve SATA II speeds?"


The answer is no. The SSD in either the HDD slot or UltraBay will use SATA III speeds, and the HDD in either HDD slot or UltraBay will use SATA II speeds. The SATA channels are independant, and one slower device will not cause the other devices to slow down.


The mSATA slot is limited to SATA II, and so the most you will see out of the mSATA is SATA II speeds.

X1 Carbon 3rd Gen Type 20BT i7-5500U, 2560x1440 (non-touch), Win 10 Pro, 8GB RAM, 512 SSD, Intel 7625 WiFi, BT 4.0 | ThinkVision P24q-10 monitor

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