Condition : New with 1 year limited warranty

Compatible Mac Model : G3 Beige Desktop/Mini Tower , PowerMac G3 B&W , PowerMac G4 / G5 AGP PCI-X Model (*Except G4 Cube)  

Compatible OS X : Panther 10.3 to leopard 10.5.8 , OS 9.22 (Native Support, NO Driver needed)

Specification:

4x External + 1x internal USB-A Port

PCI 32-Bit 33MHz Interface

Compliant with PCI Specification Revision 2.2

Support PCI Bus-Master Access

Fully Plug & Play Compatible

Compliant with Universal Serial Bus (USB) Specification Revision 2.0

Compliant with Enhanced Host Controller Interface (EHCI) Specification Revision 0.95

Compliant with Open Host Controller Interface (OHCI) Specification Revision 1.0a

Backward compatibile with USB 1.1 Specification

Data transfer rate: High Speed 480Mbps, Full Speed 12Mbps, and Low Speed 1.5Mbps supported

Connects up to 127 USB devices simultaneously on each port 

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