4.3.2 Cooling System
The chassis is equipped with six long-life fans that suck in air from front of the chassis. The air exits at the
back of the unit. The fans are temperature controlled, allowing them to run at an optimum speed. Venting
holes at the sides of the chassis provide an optional air intake, ensuring good aerodynamic properties of
the cooling air flow. It is recommended, but not essential, that these venting holes are not covered.
4.3.3 VB300-DC Power Supply
The VB300-DC unit is equipped with two –48V DC / 50W power inlet connectors. The power plug is a
male 3-PIN D-sub(15) connector. Matching female plugs are supplied with the VB300-DC unit. This plug
should be soldered to the power cable in accordance with the drawing in figure 4.4.
Figure 4.3: The VB200-DC Power connector on the chassis
Figure 4.4: Soldering the Female 3-PIN D-sub(15) Connector to the Power Cable
20 VB2xx GigE User’s Manual version 5.4