Hi Vuong103,
Welcome to Sony Community!
Thank you for the message. The fact that the mSATA didn't work in the port then it means it is not for that function. If you're not familiar with it, you should get some help from experienced people, Sony service center or a trustworthy computer repair service in your area. We can't just assume or guess what it is for . Be warned that doing something wrong could seriously damage your system.
Please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Jen
Answered your question? Glad I could help! Please Click the "Accept as Solution" button below.