Condition : New with 1 year limited warranty

Compatible MacBook Pro Model : 15-inch / 17-inch From 2006 to 2011 that with ExpressCard|34 slot

Compatible OSX : *Snow Leopard 10.6.8 , Lion 10.7.5 to Yosemite 10.10.5 (Not Supported El Capitan 10.11 or later)

FEATURES :

Complies with ExpressCard/34 Type-II standard  

Complies with ExpressCard Base Specification Revision 2.0   

Backwards compatible with with ExpressCard 1.0  

Compliant with USB Attached SCSI Protocol Revision1.0  

Equivalent to the maximum throughput of 1x lane PCI-Express 2.0 with 5.0 Gbps   

Fully Plug & Play and Hot-plug compatible  

Equips with 2 independent USB 3.0 Ports  

Complies with Universal Serial Bus 3.0 specification Revision 1.0   

Backwards compatible to USB 2.0 /1.1/1.0 devices  

Compliant with Intel's eXtensible Host Controller Interface (xHCI) Specification Revision 1.0 

Max. 5V/900mA power output to each USB 3.0 Port

Buyer Notice : This ExpressCard may a bit tight fit into the slot, but it work just fine. **Some 2.5" USB 3.0 Portable drive (larger size) may require extra power to work well/correctly, USB Y-cable or Single USB power cable/power adapter strongly recommended.

*Actual performance may vary based on hardware, software, and overall system configuration.