Panasonic: Panasonic AJ-PCD20EJ Five Slot P2 Memory Card Drive Firewire/USB.

High-Speed Data Transfer via IEEE 1394b or USB 2.0
The AJ-PCD20 is equipped with an IEEE 1394b (800Mbps) interface in addition to the USB2.0 interface provided on the previous model (AJ-PCD10), enabling it to support both Mac and Windows PC.
P2 card driver software is also available for both Mac OS X and Windows XP/2000.

Five P2 card Slots
The AJ-PCD20's five PC card slots let you mount up to five P2 cards at the same time. This is especially convenient for editing a continuous clip recorded by a P2 cam in sequence onto multiple cards.

Use the AJ-PCD20 Externally or Install It into Your PC
Install the AJ-PCD20 into a 5-inch bay on a desktop PC* and use it as an internal drive in a PC. Or, with the AC adaptor and USB or IEEE1394b** cable, you can use it as a stand-alone external drive. You can also use the AJ-PCD20 as an external drive with a laptop PC that's not equipped with a 5-inch bay.

*A P2 card driver (standard equipped) must be installed in the PC. The P2 card driver operates under Windows XP, Windows 2000.and Mac OS X.
**IEEE 1394b works on Windows XP and Mac OS X.