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Wide (750mm) racks in both 42U and 48U heights have three inches more space on each side for
cables and PDUs for networking, blade server and other installations that need to route cables along
the sides. The wide design of the 4820W and 4220W also moves the PDU trays even farther away
from the rack mounting posts, allowing more room for cables in the sides and back, helping reduce
contention between power cords, cables and installed equipment.
Deep (1200mm) racks offer more space in the back for cables and PDUs for high- density
installations. The 4820D and 4220D racks have extended PDU trays in the back of the rack, which
can hold up to four vertical- mount full- height PDUs on each side. This extra space can be used for
additional power management or for routing cables. PDUs can also be mounted with a 90- degree
rotation so that the power cords point toward the back of the rack rather than toward the middle.
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PowerEdge Rack Enclosures Technical Guide