Chapter 1 Getting Started
NI USB-621x User Manual 1-8 ni.com
3. Remove the USB cable from the connector on the USB-621x.
4. Screw a #8 or M4 screw into the bottom point on the panel.
5. Set the USB-621x on the screw by fitting it into the bottom screw notch 
on the underside of the USB-621x.
6. Screw a #8 or M4 screw through the USB-621x top screw hole into the 
panel.
USB Device Security Cable Slot
(USB-621x BNC Devices) The security cable slot, shown in Figure 1-3, allows 
you to attach an optional antitheft device to your USB device. 
Note The security cable is designed to act as a deterrent, but might not prevent the device 
from being mishandled or stolen. For more information, refer to the documentation that 
accompanied the security cable.
Note The security cable slot on the USB-621x BNC might not be compatible with all 
antitheft cables.