HP StorageWorks DAT USB Tape Drives User Guide (DW049-90916, June 2010)

Figure 10 Connecting to a 4-pin USB port with ProLiant header pin layout (red)
.
Attach USB and power cable to the tape drive
NOTE:
The drive is not powered from the USB bus. It must be connected to the server's power supply.
1. Connect the Type B connector on the USB cable to the internal tape drive.
Installing an internal DAT tape drive28