ClearCube C/Port & MVX - Manual (Page 28)

18 • C/Port Installation
Locking out Mass Storage Devices
An additional feature provides increased levels of security with C/Ports. The R Series PC
blades offer a unique Mass Storage Lockout (MSL) security feature that disables the use of
any USB mass storage device at the desktop (e.g., key drives, floppy drives, CD-ROM drives,
etc.). The default factory setting does not enable this security feature – thus in the default
mode, any USB device, including mass storage devices connected to the C/Port, will be
recognized by the operating system. However, Switch Manager allows setting MSL in
software to lock out the use of storage devices.
To enable MSL in hardware, a jumper on the PC blade needs to be moved from the default
position to the adjacent position. You will need a set of needle-nose pliers to access the MSL
jumper. See Figure 11 on page 18 through Figure 14 on page 19 for the jumper locations by
blade model number. The default position for the jumper connects pins 2 and 3, and USB mass
storage devices function normally.
When the jumper is in the default position, you can also use a software setting to disable mass
storage devices. This software setting is accessible through the Switch Manager software.
Note: When the MSL jumper is physically set to lock out mass storage devices, the software
cannot override this.
Figure 11. Model R1200 MSL Jumper Location and Settings
JP6
JP6 JP6
1 1
3 3
Default Setting:
USB Mass Storage
devices function
normally
Security Setting:
USB Mass Storage
devices will not
function