Sony PCG-SRX87P VAIO User Manual page 52

Notes on using i.LINK optical disc drives

You can use the supplied Application Recovery and System Recovery CDs with an i.LINK optical disc drive. See
Application and System Recovery CDs

Do not use an optional i.LINK optical disc drive and an optional optical disc drive with PC Card at the same time.
Connecting both drives may cause a system malfunction.
for more information.
Page 52