This item only fits unibody models (Late 2008/Early 2009/Mid 2009/Late 2009/Early 2010/Mid 2010),all unibody version, Mac Book Pro Mid 2012
It doesn't fit non-unibody models.
It doesn't fit PowerBook G4 ,Mac mini

Compatible Model: MB466LL/A, MB467LL/A, MB881LL/A, MB240LL/A, MB207LL/A, MB516LL/A, MB470LL/A, MB471LL/A, MB604LL/A, MB026LL/A, MB990LL/A, MB991LL/A, MB118LL/Am, MB985LL/A, MB700LL/A, MB721LL/A, MB723LL/A, MB724LL/A, MB725LL/A (Early 2011), Macbook Pro MD101 MD102 MD103 MD104(Mid 2012)
Package included
1*HDD Caddy 2*Screw Drivers 1*User Manual 4*Screws

• Compatible with: 2.5"/9.5mm SATA I II III HDD or SSD, the highest speed can reach 6Gbps.
• Package Content: 1x 2nd HDD Caddy for Apple Macbook Pro, 4x PVC Hard Drive Screws 2xsteel screws
• Compatible Model:MC724 MC700 MC725 MC723 MC721 MD313 MD314 MD311 MD322 MD318
• Compatible Model: 2012 mid Macbook Pro MD101 MD102 MD103 MD104

Compatible with: 2.5"/9.5mm SATA I II III HDD or SSD, the highest speed can reach 6Gbps.JUYO VONSAN