The DVR-MB1 is a small lockbox for mobile or rackmount applications. The DVR-MB1 can be mounted on four out of six surfaces allowing it to work in any location. The DVR-MB1 comes with one fan and has the option of mounting three additional fans for better themeral control. The DVR-MB1 is also rackmountable, with a 2U racking height, making it good for small storage applications.